I'm going to jump on the "abrasive material against a painted/applied finish" bandwagon. One can't reasonably expect a painted finish to withstand rubbing against ANY material, whether it is cotton or concrete. I have, (and many of my friends have,) at least one handgun that's suffered holster wear, regardless of the type of holster. As a matter of fact, I've seen worse wear from leather than I've seen from Kydex. More to the point, I have spots on the airbox and frame of my V-Rod motorcycle from my jeans rubbing on it while I ride, which I can hardly blame Harley Davidson for sub par paint quality/paint application. Yup, blue jeans, made from cotton, have left some considerably noticeable scuff marks in the paint of my motorcycle. And we're not talking about a backyard Krylon rattle can spray job here, it is factory paint, underneath several layers of clear coat. Now, I seriously doubt that ProVape, despite being a great company, selling an excellent product, applies automotive grade paint jobs to their devices. Putting said devices into any kind of holster, whether it's cotton, leather, Kydex, or concrete, will invariably cause wear marks, regardless of how many times a day it's put into, or taken out of, a holster. Besides, what's wrong with a little holster wear? It adds character.