I handle firearms multiple times a day and in the past 25 years, I have yet to drop one.
I have yet to pull the trigger when I didn't mean to. In fact, it's so ingrained to not pull the trigger, I would normally let a falling gun drop, rather than try to catch it. What to do if it's a P64 with the safety off?
To each their own. But I'd sooner carry a 1911 with a 3 lb trigger with the manual safety removed than to carry a gun that can shoot me or a bystander thru the head if:
1. I were to drop the gun.
2. It were to fall out of my holster.
3. I were to drop my entire holster while in the mens room, and the holstered gun lands on the hammer on hard tiled flooring.
A P64 isn't simply not drop safe. It's not drop safe in the same basic manner as an old Colt SAA isn't drop safe. No one with any sense carried one of those with the hammer over a loaded chamber. If it was the sort of non-dropsafe of an old Springfield 1911, due to a heavy firing pin and weak spring, then no big deal. That can only fire when dropped muzzle down. I don't mind a remote chance of putting a hole in the floor. I won't abide a remote chance of accidentally killing someone else or myself. As remote as the chance, I think the need of me drawing and using a sidearm are even more remote.
I have handled stuff, including guns, for my entire life. I have dropped plenty of stuff, including guns. (And I didn't have to duck for cover). What I have never done in my entire life is to have been in a situation where I would have drawn and fired a carry sidearm, intentionally. Thus, I wouldn't carry a P64 with the safety off. That would be a net negative proposition. And for what? I can use the safety, just fine.
No need to engage a safety on anything with a lowered hammer.
That's the thing. You can't lower the hammer on a P64. It has an exposed, rebounding hammer. This method of making a non-inertial firing pin "safe" has proven to be crap, and is nothing but a footnote in firearm history. There's probably a joke about Polish engineering in here, somewhere.