Who carries an allen wrench around with them all the time? On the other hand, there's almost always something handy that can be pressed into service as a screwdriver, including various parts of the gun itself.
2) Hogue soft rubber grips.
That neoprene is nice and sticky-grippy in my hand. Unfortunately it's also nice and sticky-grippy in my holster. By the end of the day my tee shirt would be all balled up around the pistol, which is considered to be a fairly serious faux pas at an ATM at two in the morning.
3) Blued steel for CCW guns.
Sure, I like traditional blue steel because it looks the way a gun should look, but when it comes to something that's going to get sweated on, maybe rained on, and be in and out of temperature extremes, I'd personally rather slap a coat of paint on it or make it out of