1 up also had (I was told they have since been replaced, but current reviews point to the same trend)some legitimate meat head bartenders with major anger issues. I have told the story before but 1 of them jumped the bar to try and choke out my brother (one of the nicest guys you would ever meet) because he did not tip on his second beer.
We checked out online reviews and it seems to happen enough that others have posted about similar experiences.
Just keep on your toes if you do go their. I suggest not drinking or even interacting with the bar staff. Seriously, they have/had issues and it is just not worth it, esp when there are better places to go with better staff.