This was nothing that required your hand moving to "right about where my G30 will be next month" This wasn't a situation that even required the thought of using deadly force and you're moving for a weapon?
Nothing wrong with paying attention to your surroundings but I think you're a little paranoid if everyone that approaches you is deserving of you reaching for a weapon.
Maybe some training is in order before you strap on the handgun?
NRA Patron Life Member
GOA Life Member, JPFO Member, RMEF Member