“As such, you will be the first target, and he will be sure to approach you with great caution and stealth.”
Think it is more likely the bad guy will wait for another day.
I don’t open carry but don’t go to extreme lengths to conceal, either. Mostly go with “discrete carry”. Arizona has pretty good gun laws and it wouldn’t be a big deal if someone DID realize I had a gun. I just don’t care to flaunt it.
Not if he is a "bad" enough guy. In my state, most convicted armed assault/robbery perps admittedly expect that their victim or a witness will be armed. They are better prepared to deal with them if they knew who that armed person was.