I have one for my M&P Shield and it works surprisingly well. The material is grabby enough that it stays put in a pair of jeans, which is all I've tried it with so far. It is certainly a very simple solution and very low profile. The one i bought is soft, so two handed re-holstering is required; they do sell one with a stiffened upper for one handed re-holstering, but i haven't tried or seen one of those.