Would most Paladins travel with Vampires or Char worshipers or even a Githyanki? I question the party makeup... too much in setting up neat storylines then lack of choice forces you to take all these emotional baggage characters with you.
Also - Would not a rouge steal at will if the urge hit them? why does this break your oath.
Oath = unknown what it means and what actions make you break it ... learn through trial and error i guess... DO not forget to save your progress.