My silvertip is checkered. The quality of the checkering is terrific with very fine points. It feels terrific in the hand.
I had always thought that doing anything to the grip to make it "rough" would make it easier to torque the grip through the shot. I asked a bowyer about this (one who checkers grips) and he reported the checkering provides a solid, unmoving positioning of the hand in a way that reduces torque.
I shoot recurves with checkered grips and uncheckered. I'll have to say my bow hand feels more secure and unmoving with the checkered grip, which I think is a good thing IF I set my bow hand over the center of the grip like I'm supposed to.