"Crow's beak" butt cap is going to give you a #22 shaped handle, each abd every time, with the exception of a "stag" handle. If you want finger grips you can have the following:

A) Brass butt cap in 2 sizes and rounded or not.
B) Brass butt "plate"
C) "No" butt cap or plate
D) Compass installed
E) Wrist thong (with any of the above)

Scalloped, flanged, smooth, etc. butt caps, "coolies" etc. will not support finger grips.
Best, Capt. Chris