That would have no impact on an evil playthrough at all...because you wouldn't try to resist it too much. Sometimes where it makes sense like not killing someone you want to take as a companion sure resist that. But most of the time there really aren't reasons to resist it...and if you want to play evil as dark urge you should absolutely want to make sure you feed that urge because you get some incredible rewards from it. For an evil playthrough it would be perfect...literally no downsides, just more options and more fun.
Mhm, that depends on how you envision your evil playthrough?
To use the old alignment terms, the urges push you towards chaotic evil (and an extreme version at that). But that is not the only flavor of evil.
Then again, you could argue that (sometimes) indulging in the urge if you think that gives you power could be tempting to a broader selection of evil, not jsut those who love murder and carnage.
But, honestly, I mostly searched for the clip to show that, according to that information, Dark Urge is not just Tav+, because the urges can make you *do* things a Tav would avoid.
