Can't disagree, did exactly this and they are extremely durable (well I used gorilla tape not duct tape)
However, the puck that comes with these is pretty soft if you plan on using it a lot. I ground through more than half of them in one day. Ended up ordering these from Amazon and these pucks have barley a scratch on them after weeks of use: http://www.amazon.com/Ojoom-Slide-Pucks/dp/B00NY4JYPG?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o04_s00
On a side note, I ended up ditching the landy gloves all together and just sewing some Velcro on fingerless work gloves and using the pucks from Amazon. Maybe it's just me but I just can't stand full gloves, I'd rather have my finger tips open.