Ok, I'll bite...
First, can we agree that the vast majority of permit holders go to a target range less than once a year? Can we also agree that they probably fire less than 100 rounds a year on average while practicing? That target practice does little to help offset stress and adrenaline in a real self defense shooting? Can we agree with these three things, when looking at your average HCP permit holder?
I contend with that level of training/practice it's nearly impossible to lock in the needed muscle memory to ensure that under stress they would remember to always disable an external safety - or for that matter know how to deal properly with the safety being accidently re-enabled during the course of a self defense shooting.
Also, you have to consider incidents where somebody else may need to operate your firearm in an emergency (a wife or family member for example), who has no training on the weapon in question (but may or may not have training of a different weapons platform)... While you may have the needed muscle memory to disable the safety, in all likelihood they do not.
So, if you take two different average permit holders and place them in a self defense shooting... one carrying a 92fs and another carrying a Glock 19, all things equal it's more likely that the Glock 19 goes bang. If in the middle of that shooting a wife has to pickup and use that firearm with no training, it's even more likely to go bang for her.
IMHO all things considered, firearms with have external safeties, and firearms that do not have the same trigger pull everytime increase complexity and chances for cousin Murphy to come for a visit at the worse possible time. For most shooters the goal is to do everything possible to keep cousin Murphy away.
So for your average HCP holder, they should pick a simple and reliable firearm to carry day to day, that has no external safeties, and has the same trigger pull every time the trigger is pulled... There are other firearms that meet those requirements, but of the two choices the OP gave, the Glock 19 is hand downs the winner.
While it can be argued that with enough of the right practice and training you can overcome both of these limitations, the fact is the vast majority of permit holders aren't spending enough time at the range and taking active shooter classes to meet even the bare minimum standard to accomplish that task.
With all of that said, we're all big boys and girls here and you can buy whatever you want, but I personally think the risk of complications when the firearm is needed the most removes the 92fs and 1911's as a daily carry firearm for average permit holder.
I think that if you train with what you carry there shouldn't be an issue with it. I certainly would not go out and buy a Glock due to the lack of external safety and the logic that only a gun without an external safety is the only thing to carry. I will however agree that for concealment purposes that the G19 is the better choice taking into account it is the smaller of the two.