Not speaking for Wayne, but lets say I am drawing to a shot, with a bad guy in the open at fairly close range and standing in front of a brick wall and no one is around him, can I safely start to get my trigger finger into the trigger guard at about the 2 position and work the problem as a press-out? I sure can.
Lets say I have that same bad guy at low ready, giving commands, and he decides to fight, can I get my finger onto the trigger and get the slack out on the rise? Sure, with the worst penalty being that my first shot clips the guy's knee or pelvis because I am a little too much "slack out" on the way up.
Most problems are not that clear cut on the street in the cop world, or the military spec ops world, and the penalty for hitting no shoots is vastly greater than one or five seconds. I note that even at the Tac Conference when people realize that the penalty for hitting a no-shoot is 100 seconds that they slow their roll noticeably.
Now, change the match to where Tom gets to keep your guns, your wallet and your car if you shoot a no-shoot and you have to walk home wearing a dunce cap, and see how people start to act.
I get in the other thread where folks are talking "match vs street", totally get it, and get that you may be giving up micro seconds in the match and may not score as well by going a tad slower. Some of us are willing to live with that.