Heh, if the barbsassin tries to slit the character's throat while his buddies are in the shop, he's a damn fool and deserves what he gets. This is one of those things that should've been picked up by the guys that recruited and trained him as an assassin...
Assassin Trainer Bill: "Say, is it just me, or does the new guy seem a bit on the crazy side of reckless?"
*new recruit goes running by in the background, screaming at the top of his lungs, dagger clutched in each hand, arms waving over his head like a muppet*
Assassin Recruiter Carl: "...you may have a point..."
Assassin Trainer Bill: "Yeah, I thought so. I'm thinking we cut this buckwheat loose, the sooner the better. Why did we even pick this guy up in the first place?"
Assassin Recruiter Carl: *looks down at the floor, muttering in an embarassed fashion* "...er, I was kinda drunk at the time."