???
To each is own but....
That is not my definition of to each his own
Maybe its a matter of practice, but on my Beretta's, by the time i clear the holster and bring to to bear on a target, I have more than enough time to flip the external safety. I am more worried about the person that thinks they can deploy in a heated situation and because of that belief considers themselves superior to the rest of the gun toters (those of us on the other end of the "but") than the person that actually has and in the internet world, most think much higher of their degree of coolness under stress than I do. But
to each his own
How do you know you will have more than enough time?
I can tell you from personal experience, after a couple different training classes, that even in the controlled environment of a class there were several of us that either missed or forgot the safety during a high stress drill once or twice. And that as JUST a drill...
I dont think there is a right or wrong here, do what's comfortable for you, but accept the fact that mistakes with the safety DO happen..
Some of us just prefer to cut any steps out of the process we can.