I have a pair that got "road tested" a few years back. Tore off a rear pocket and some denim, but the Kevlar protected my delicate skin. Not a bit of rash.
I bought another pair to replace and have worn them out, need some new ones.
There are other brands that aren't quite as spendy as the Draggin' Jeans and look to have comparable coverage. They just use the generic aramid fiber instead of the name brand Kevlar.