Wait, so explain how after parrying someone's blow with your gun you are going to get off a shot at the guy. I think it makes perfect sense that in that case, you can only use your gun to beat the shit out of someone. My biggest question is:
Why the hell are you being caustious when you have a gun and the guy you are fighting (I assume anyways) does not?
Oh no, don't cut me with your little knife, run away…oh, wait, I'll just blow the fucker's head off.