Manual safeties on 1911 .45s are learned to be flipped off as the arm leaves the holster. I have ingrained that. My .45 rides cocked and locked. Condition One. Round chambered, hammer back, manual safety on. As it leaves the holster that manual safety is flipped off. The grip safety is already disabled by my grip. Arm is ready to be triggered by the time it is on target.
I do understand to some degree your trying to think ahead of your son, though. I know that my wife will never make herself familiar enough with a semi-automatic sidearm to flip off a safety, or rack the slide in case of a misfire. So, she has a S & W hammerless revolver in .38 Special, loaded with +Ps. No safety, no slide to reckon with. Just pull the trigger. And, when I bought it I chose it over a similar Ruger because the DA trigger pull was so much better.
We do the best we can, and trust in the Lord to do what we can't. He is able when we are not.
