Posted by 95XL883: My mind was already made up that I was not pulling the gun from its holster unless he made a move that could produce a weapon. If his hand came out with a weapon, I would have then pointed mine at him.
Scaatylobo nailed it squarely with this:
IF you really need to draw - it had better be to AIM and SHOOT your armed assailant.
If someone in such a circumstance makes a move to present a weapon, your need to employ deadly force is real and immediate.
The only question is how quickly you can draw and fire.