drop bear
Sr. Grandmaster
In your prior post, you set up worst case scenarios and predictable mistakes.In some of them (being grabbed and carried off with arms pinned), while the gun didn't help, it also didn't hurt, so the issue is the scenario not the weapon.
You're operating on suppositions about the incidence of guns being taken away. I don't recall any specific statistics, but I seem to recall that being actually pretty rare. There's a couple of differences in the situation between cops and civilians. Firstly, the cops aren't usually trying to leave, so can easily get caught up in stuff I'd bug out on. Secondly, their weapon is obvious and known. Grappling for that weapon can (and sometimes does) start before the weapon is even drawn. That's unlikely with a concealed weapon.
Like any physical skill, retaining a weapon and using it in complex situations will require more training. Deploying it takes less training. Deploying and firing, not much more than just deploying. Actually hitting a target under stress requires a good bit more, but there's pretty good evidence that hitting a target isn't often a deciding factor in ending a threat when a gun is presented (others here can cite the statistics on that, but in the majority of cases firing the gun isn't even necessary).
It is a terrible way to approach self defence though.
If you are going to carry a gun you need to be set up in a manner that you are prepared to shoot and kill someone.
Which means you are prepared for the sort of violent confrontation that requires you to shoot and kill someone.
Otherwise the attitude to gun carry becomes irresponsible and dangerous.
And god forbid you shoot miss and kill someone else.