Hi 5shot.
I have been shooting for a long time and this one Is very new to me. I first used a 1911 pistol In the early 50s In U.S.M.C. boot camp In Paris Island S.C. At this time I own at least 15 1911 pistols, Colt's, Kimber's, Dan Wesson's, Sig's, Springfield's & others. This Is the first time I ever heard of this, and I don't know of anyone else who shoots a 1911 with his/her middle finger, If my right first finger were damaged some how, I think I would go to my weak hand shooting before using my middle right finger as shown with my first digit sticking out as shown. The slide would also be rubbing on my first finger.Another thing would be, you would only have 2 fingers holding onto the grips, very unstable, If you ask me. I have trained with my weak hand shooting many times In the past. I would never go this route.
I also belong to another blog ( 1911 Forum ) and this other blog has at least 75,000 members from all over the U.S. and other countries. And most of the posts are about the 1911 pistol and I have never seen anything like this on there also. Now don't get me wrong or take this the wrong way. I'm saying that I have never seen this before and I'm not saying It's not so!!!
" In God we trust, all others pay cash "
Semper Fi all. Hank.