Never any interactions myself but saw a few.
One was a drunk guy taking off his shirt on the floor - quickly and painlessly escorted to the door by bouncers and his friends. I think it was one of those "Come back tomorrow" kind of exits.
Another was some dude with a smart mouth of some kind. Was asked to leave. Didn't. Was then forced to leave fighting all the way.
Finally a group of four young mexican youth yelling "puta" (whore!) to the dancers on the stage. Each of them forced out separate doors. They hung around a bit kicking at the emergency doors from the outside but finally left after a bit (don't know if the cops were called).
Oh yea, I remember a gal in civis on the floor by the door with a weird look on her face. When I went out, a bouncer was talking to some dude "She isn't worth going to jail over and be smarter." Definitely a PL who went over board and she ran to the club for protection. I thought about stopping, but at the time I had contracted a full blown case of PL myself.