Way back when I used to run my weak hand index finger on the front of the trigger guard. Stopped doing that when it became obvious that it wasn't promoted by any trainers. 5-6 years ago I first saw the weak hand cocked at a crazy angle to get the thumb down onto the side of the frame grip. That doesn't work for me at all. One of the guys I shoot idpa with (who is generally top 5 overall) showed me how he does that grip so I tried again. No good. But he shoots a Glock and they all have a square trigger guard. I just looked through the APXA1 thread and wow, it has really aggressive looking checker on what looks to be a really wide trigger guard. So my question is, if finger on the trigger guard is not a popular grip, why do so many pistols have a square guard?