A Swiss Army knife isn’t a good option for self defense, a good folder with a tip up pocket clip would be a better option. I carry a pocket knife in my waistband for this purpose everyday. It’s a bit different for you than me as I’m male and wear pants or shorts whenever I’m out. The important part is practicing getting it out and in action because it can quickly become a bad thing if you don’t know how to use it. You should also look into some basic self defense classes to go along with it as you can do a lot of damage with your body in a fight or flight situation. Lastly, know when you should fight or just give up, you can escalate a situation very into something else entirely when you could have ended it by giving up your purse or whatnot. I take my and my family’s safety very seriously, the cops normally get there when it’s too late. If it’s Legal where you live, you can look into a concealed handgun license, take basic and advanced pistol training and you will definitely be ready to handle a life-threatening situation.
Edit:
https://www.amazon.com/Kershaw-1555TI-Carbo-Nitride-4-Position-Deep-Carry/dp/B0074FI28Q
My best advice is pocket knives with the spring assist openers. Kershaw has some that are similar to this that you can keep in your pockets. You could keep a hand in your pocket to give the "Casual while professional" appearance while nearby someone that you're dealing with. Don't look nervous while doing it... just keep your hand in your pocket and practice. Say it's cold if they ask why you keep your hands in your pockets. They'll piss off about it.
I literally had a lady KEEP her hand in her coat pocket while showing me an apartment. She looked nervous as shit while doing it. I calmly said "Look, miss, I know you don't know me, but the fact you keep your hand on your gun the whole time is really getting strange for me. I'll leave first, and you can be behind me, but you really need to stop that."
We stepped outside and I lifted the front of my shirt where I was carrying a ruger LCP appendix and then the back of my shirt where I had my baretta. I had just left a gun range and told her "Really, I just want to look at the floor space, I really don't want anything else to do with you."
She kept her hand in her pea coat pocket still the whole time. I didn't rent there.
You can't change legislation overnight but you can get a couple pocket knives from amazon in a couple days.
I would get the Cryo. It meets all your criteria.
My personal beater knife the thing is a champ, cheap and solid (had mine almost 3yrs)
I suggest the Cryo, by Kershaw. Seems to fit your requirements except price. You are hovering around the hundred dollar mark so you will need to buy a few of them. Call 'em 'spares.' ;-)
I really like my Kershaw Cryo. Very inexpensive (<$25 online) and a great size for EDC. The blade is easy to maintain and came from the factory with an excellent edge on it.
It also has an adjustable pocket clip and speed-safe assisted opening which is a nice feature in a relatively inexpensive knife.
[$21.28[(https://www.amazon.com/Kershaw-1555TI-Carbo-Nitride-4-Position-Deep-Carry/dp/B0074FI28Q/) on amazon right now.
I use the Kershaw Cryo 1555TI and TAC Force TF-469 Gentleman's Assisted Opening Folding Knife.
Do not try to pry tile off a wall with the end of the Kershaw one. I was dumb. Both have served me well so far.
(the links are to Amazon but not affiliate links)
Kershaw Cryo MODEL 1555TI 49.90 EUR on amazon.de
Kershaw Cryo MODEL 1555TI 22.30 USD/18.95 EUR on amazon.com
available here at an austrian shop for 77,90 EUR
in this case it's a chinese made Kershaw, but kind of a standard go to knive in that price range.
For US made:
Kershaw Blur for 89,95 EUR at amazon.de
Kershaw Blur for 44.95 USD/38.20 EUR at amazon.com
Kershaw 1555TI Cryo SpeedSafe Folding Knife https://www.amazon.com/dp/B0074FI28Q/ref=cm_sw_r_cp_api_YBYxzb7GJN4R5
Kershaw Cryo https://www.amazon.com/Kershaw-1555TI-SpeedSafe-Folding-Knife/dp/B0074FI28Q/ref=sr_1_1?s=sporting-goods&ie=UTF8&qid=1497251283&sr=1-1&keywords=kershaw+cryo its probably the best bang for buck knife you're going to find https://m.youtube.com/watch?v=gFCoTt6W9Rw
A pocketknife. You don't need a big one, just a pen knife or Swiss Army Knife is fine.
/r/EDC
I carry the Kershaw Cryo but, I'd hardly call it "Ultralight" @ a tad over 4 oz.
My first knife was a Kershaw Cryo. It's a good cheap beater/first knife. Around $27 on amazon
I should have mentioned I currently use a Kershaw cryo. Do you know what the difference would be between this and the blur?
Kershaw 1555TI Cryo SpeedSafe Folding Knife https://www.amazon.com/dp/B0074FI28Q/ref=cm_sw_r_awd_Mi2gvb0DR3HEB
This Guy did - Who knows what would have happened if the knife snapped in half
Granted that is very low probability, but you still might need to rely on your knife to save your life. Even if you never need it, an extra $80 to save your life seems like a good deal for me. And thats ignoring the fact you can get a nice Kershaw for around $30
So honestly, I don't see the point in getting the Sanrenmu...
The Kersaw Cryo is about the same size as your Rollock. Mine has worked well and keeps a good edge.
agreed
Kershaw Chill is pretty long and skinny, good for skewering pieces of food, but not so good for scooping "herbs". I would suggest a Kershaw Cryo or a Spyderco Tenacious because of the wider blade, so you can scoop more grass. The tenacious is good for larger amounts, as the blade is completely ground flat so you can fit more onto it. The Cryo is smaller and more compact, and what I personally use, but not flat ground. They're both good pocketknives too, which is the main reason I picked them up.
This cryo? http://www.amazon.com/Kershaw-Cryo-Speed-Folding-Knife/dp/B0074FI28Q/ref=sr_1_1?ie=UTF8&qid=1337122072&sr=8-1 Looks OOS everywhere, so I am just assuming they haven't been releasing them.