idk, luke seems pretty stand i dont think he BSs the GM often. but he has shown he's willing to play on the GMs ignorance and complexity of the grapple rules, coercing the GM to just let him do what he wants... its probably only when he has a REALLY cool idea in his head, and no rules are broken so much as bent into a pretzel XD

Agreed. Luke isn't a jerk, just a gamer who wants to do awesome things. The difference between a gamer who wants to play a powerful character and the kind that wants to have power over other players by proxy is a very major one. Luke just wants to have fun, and that makes him - I suspect - a great guy to play with.