Are you doing dry fire training with your pistol to the point where flicking the switch is automatically 2nd nature? If not then I suggest you do. It's easy to say that's a simple action but in most cases when shtf and adrenaline kicks in, ppl default to their lowest levels of training. So if you haven't been training where you're used to drawing from your holster, disengaging the safety, getting on target and then firing isn't 2nd nature to you then you better get it to that level.