Quote Originally Posted by pandabearcat View Post
You don't seem to understand the question.

15% dps while you have 0 tp is still 0 damage.

I was wondering that given the scenario where the fight is long enough that you run out of tp consistently, whether the added longevity from not using darkside offsets the 15% damage bonus. If you have to spam unmend/unleash to give yourself tp regen room, it may be better to have darkside off for that part at least.
The MP difference between darkside up and darkside not up is very minimal. It's not like it regens that quickly in combat normally. Plus, the loss of MP to darkside can be easily restored by DRK's numerous MP regen cooldowns. One tip to keep in mind is that Sole Survivor can apparently be used on enemies as well(?), useful in fights with adds. If you're short on TP, you just deal with it for a couple GCDs. DRK isn't short on OGCD moves, and in fact is better off out of TP than the other 2 tanks.