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Something like the SS Spyderco Delica 4 can do the trick.
With that I also wouldn't recommend using it for self defence, but rather use pepper spray or a personal alarm.
Spyderco Delica 4 Stainless Steel Plain Edge Knife [link]
Here ya go (:
not exactly "gentleman's", but any spyderco with a stainless steel handle is quite classy. for camping, I would probably go with the delica or endura, but for EDC I would prefer the tiny size of the dragonfly (I like smaller knives, btw).
only downside is a steel handle is heavy... and the G10 or FRN ones look much more tacticool. (however, I really dig the FRN scales of my byrd robin - but I was never looking for an actually classy knife in the first place)
also, for a real gentleman's knife, take a look at buck. their classic folders (110 and the like) are like the definition of a gentleman's knife.