Hi guys, just came back to FF14 after nearly 2 years of not playing.

Just a few dumb questions, I'm getting the impression that as DK, the default tanking stance is Darkside instead of Grit with the mechanics of dark arts tied to Darkside.

If that is the case, when exactly do you switch to grit stance?

Also, is it a must to use Dark Arts everytime it's up? And what is the go to skill to use Dark Arts on for single target tanking vs mob tanking?

Thanks in advance. I planned to switch to DK from PLD once I finish the main scenario quest.