Well, the tape I put on my R9s
really improved my grip. Furthermore, it makes the gun less likely to inadvertantly slide out of my Hedley pocket holster and out of my pocket. And it does not in any way interfere with my ability to draw the gun, since all the tape (I put it on the stocks, and on the front- and back-straps) is under my hand when I draw the gun.
Thanks for a great tip, gents!