For those of you who use straight as well as DE razors, do you also stretch the skin when using your DE's? If not, why? Almost everything I've read and watched says not to stretch the skin when using DE's as it could lead to in-growns and irritation, but when you get a shave from a barber, they always stretch your skin to make a smooth surface for the straight and reduce the likelihood of a nick. But by stretching, the barber is not necessarily opening you up to in-growns and irritations -- right? In fact, on Utube I recently saw GFT's master barber shaving someone with, I believe, a mach3 and showing the client HOW to stretch his skin while shaving himself at home. So, my thought is, when using DE's, why not stretch the skin with your non-holding razor hand, perhaps not necessarily to the extent of when using a straight?