hm..My Sith are all darksiders, but what they care about [exept themselves & their companions) is that the Imperial warmachine shall run smoothly and efficiently and therefore see it as their duty to remove incompetent/corrupt military officials or other Sith. The dont take kindly to wasteful use of resources & manpower.
My agent sees his job as a oportunity to cause havoc & destruction aswell as cashing in, he still obeys Imperial command, but the idea of becoming a free-lancer is not that far-fetched.
My bounty hunter has a rather strict moral code, and wont deviate from it, she get's the job done, one way or other.