littlejerry -- It seems to me like you're agreeing with gringop. He said "outside the trigger guard." You're saying "outside the trigger guard." The rule says outside the trigger guard.
I like the hard register in the ejection port a la LAV, Hack and SouthNarc.
I was at a USPSA match two weekends ago. Newish shooter ran between positions, tripped, started falling, and as he tried not to fall, the gun went up, over slightly, and a bunch of us saw muzzle. Fortunately no shot fired.
Trigger discipline is important, but what is really important is muzzle discipline. If the dude lets one off running between positions, he makes a loud noise, gets DQ'd, and probably learns a more enduring lesson that some shades of gray pestering by the RO. If someone breaks the 180, it is possible he shoots the RO, someone in the squad or observing from up range. Keeping that from happening seems a lot more important.
Likes pretty much everything in every caliber.
Agree 100% that muzzle direction is the most important safety issue. However, that doesn't change the existence of the trigger finger rule (both as part of the cardinal rules and most shooting games' rulebooks) and the need to interpret/enforce it.
The reason I pose the question is that I have had 2 AD reloading a Glock 34 and both times my finger was on the frame and it was really cold. I was applying pressure to the frame with my finger and it slipped off and wacked the trigger. For me and G34, actually CZ too, I find it safer and more comfortable to sort of wrap the front of the trigger guard. My guess is that the frame index was really started by instructors working with multiple pupils and in this setting I could see being important so that a bystander would know that the finger is off the trigger.