I kinda had the thought that finger groves would work semi well in duty/combat situations. Where you had to grab the gun quick and draw. The groves helped get the hand grip more where it should be.
I had the the chance years ago to try out S&W Model 10s with various grips and them. And this is what my thoughts were from that experience.
The problem with finger grooves on combat pistol is that you might get a really bad grip on the gun coming out of the holster (gunfights have a referee, and his name is Murphy) and be unable to shift your grip to get a decisive shot off.




















































