DRK - Is it worth using Dark Arts Bloodspiller without Grit?

[BlackironTarkus]

So then, only DA Bloodspiller if you're in Grit or have excess MP as off tank? Save DA for Siphon and Souleater?

What? No. DA bloodspillers out of grit if you can because larger base potencies get a higher gain from criticals/directs, but don't worry about prioritizing them or not if you don't want to.

When you're in Grit however you want to DA every spiller. Two different scenarios.

[Pori_Dessu]

So then, only DA Bloodspiller if you're in Grit or have excess MP as off tank? Save DA for Siphon and Souleater?

What? No. DA bloodspillers out of grit if you can because larger base potencies get a higher gain from criticals/directs, but don't worry about prioritizing them or not if you don't want to.
When you're in Grit however you want to DA every spiller. Two different scenarios.

This ^
When out of Grit, it's actually a good damaging skill (Specially if you have Crit/Direct melds), it's not "Super" priority tho, I'd dare to say. To be honest tho, what else would you spend the blood when Delirium is on CD? And MP is not really a issue right now, as long as you're not using Dark Passenger. So, if you're playing correctly, you should be able to use it without worrying about not having MP to use DA on Syphon and Souleater.