I find the Urge utterly compelling. Classic Baldur's Gate had this thematically, but outside of a "No I will not give into the Taint" line you could choose once or twice - The Divine Blood of Murder that courses through you doesn't really factor into your character. I would *love* to go all in Lawful Good Paladin of Torm, holier than thou Cleric of Selune and just see how far I can get resisting and refusing. I play these sort of things no-reload - so it'd be quite the exciting experience, win or loose.
By the same token, I often find it difficult to play truly evil, because it's just not in me. And, games rarely give you scheming and conniving options other than 'I will kick your kitten'. This will allow me to have a reason for it, and am looking forward to go with a more and more corrupted Druid or something that just becomes this terrible brutal, conniving witch taht sacrifices everything and everyone around her in a quest for lust and bloody power. Yeah, I'd love to see that. Let's see if Halsin's so into me while I'm in Spider form.
But. Just a regular Tav first, Shadowheart second and then it's time.