I know I've seen it used before but never paid any attention to it till I handled a new Shield Performance center 9mm at PSA(side note, really nice gun with far improved trigger). The shield had a sandpaper like feel, but wasn't a wrap type application. It felt more like it was part of the grip surface. It was a dramatic improvement over the standard shield. I've got a g21 with a modified grip that I still find slippery. The wrap on it increases the bulk of an already fat grip. I'm contemplating trying this new grip texture application. Anyone tried it yet? Any recommendations?