On this, I disagree, somewhat. There is no "wrong" grip if you hit your target and do not injure yourself. Holding it "tightly enough" is a matter of what gun, and grips you are shooting. And a matter of the checkering itself.
The checkering on the classic S&W grips is a fine aid to a good grip on a .357, but is a cheese grater in my hands on a .44 Magnum. And it would be much worse if you had the same kind of checkering on a Ruger SuperBlackhawk!
Everyone is different, of course, but for me, despite how good a good checkering job looks, there is a level of recoil and style of grip frame where checkering is a detriment, not an aid.
.44 mag and above, and single action revolvers, I want smooth wood, or checkered RUBBER (not hard plastic).
Smooth. The one time I shot a .44 Magnum the checkered grips scratched the palm of my hand -- not enough to draw blood, but enough to be uncomfortable.
