As to the brandishing issue, I will let those from NC answer that, as brandishing definitions are different from state to state.
I will say this, though. I am not one to answer the door with a gun in hand. If it is during "normal" hours, I am armed, but not in hand. If it is after "normal" hours, I am not opening the door until I establish that I do not need a gun. Thus, no gun in hand.