It's your character until you enter a 6 or 12 man quest. Then you're on a team. Once your poor build choices result in the team suffering, then everyone gets a say. There are lots of terrible build choices that aren't visually apparent, but wielding two bastard swords is a real blatant one.
I will NOT boot you if you hold 2 khopeshes until after you get into the quest and THEN swap to your bastard swords. Because I can't boot you once you're in the quest!