I had a broken ring finger which was broken about a half inch from the tip. I was bowling for a while with just 2 fingers, leaving my ring out of the hole. I inquired about the Sarge Easter drilling, and figured that it would Not aggravate my injury after reading about it here. I asked my driller, who uses this drilling, and he also felt it would be ok, so I gave it a try.
Bad move. Because the ring finger hole is a standard drilled hole, it actually caused me to reinjure my finger as it took longer for that finger to exit the finger hole. Didn't work for me, but I can't say it would or wouldn't work for you.