Cutting chunks out of a gun you rely upon to protect your life really doesn't make much sense. Adding some grip/friction to the area where the hand contacts the gun would be beneficial. Chopping notches that may hang up on clothing/holster, not so smart. Would you cut the grip of your carry weapon? I wouldn't. So its hard to believe that people who relied on their revolvers for everyday protection would do so 100 years ago.
Also, we don't brag and tell people we are carrying, in a time when open carry was accepted, would you really want to be the guy bragging that you are a killer? Seems that only leads to challenges.
NRA Life Member