I carry regularly and was always taught that if you are going to carry , do it as often as possible. Then if the need to defend yourself should arise it is harder to argue premeditation by reason of possession. In other words they have a hard time saying you had the gun because you intended to shoot the person. The 2nd thing I was always taught is NEVER PULL A GUN UNLESS YOU PLAN TO USE IT You shouldn't try and intimidate this usually only serves to escilate things.
I learned all I need to know about life by killing smart people and eating their brains. Eat right ,Exercise ,Stay fit, Die Anyway!