I own a Beretta 92A1. I don’t shoot competitively. I was watching an Ernest Langdon video about the things he likes about SA/DA pistol. One of them is his ability to put thumb on hammer when holstering the pistol compared to striker fired. I see the wisdom of having positive control of the hammer. One thing I like about an SA/DA (with visible hammer) is being able to tell if cocked by sight and/or feel, compared to striker fired. What I am not sure of is what is the undesirable outcome that might happen without thumb on hammer? In competition is it possible for the hammer to get hung up on clothing or belt and the hammer fall? I’m guessing and inadvertent discharge has happened in the past during a competition? With a Beretta 92 having the firing pin block, could it fire without pulling trigger if it the hammer did get snagged? And if you are putting thumb on hammer do you keep down pressure on it so it can get charged (pulled back), or do you put up pressure on it so it can’t fall forward, or do you just keep it from moving at all. I am gonna adopt the thumb practice when shooting and I want to apply it correctly. Up until now I exercise the decocker/safety (mine is not decock only) and then holster the pistol. Perhaps the thumb move is more useful with an active trigger (decock only)? Thanks