I was just in a party with a DRK that did something I'd never seen before. They kept Grit up full-time, which is normal for Duty Finder content, but during AOE pulls, they turned off Darkside (they definitely didn't just forget, because they kept specifically turning it on or off at various times). I don't play DRK that much, so I'm used to just leaving it on 24/7.

Is there ever a reason to not have Darkside on (aside from between-combat to regen MP if you really want to), or was this guy just weird? I couldn't come up with any particularly good reasons why they'd be turning it off. They could regen MP, I guess, but in combat, that doesn't happen very quickly.