1. I don't think so. The Dark Urge has the ability to be very distracting. It doesn't allow pro-social backgrounds and you may be, in practice, locked out of romantic relationships and companion plotlines. The Dark Urge is the star of the show and has no need for any of that.
There might be towns/places hostile to you as well, which denies you even more content.
2. Yes, because I currently believe the Dark Urge isn't actually a person. They're a fragment of some dark power. Larian may be baiting us with the Bhaal theory, or they may not. However, if it's not Bhaal, it's not necessarily something less evil.
