Uh.... at level 61, the cost of a DRK toggling Grit on is 1347 MP... there's no way at 70 it's less than that. Darkside should always be on, and there's no need to toggle it on or off anymore since they removed the MP drain.
Maybe this is in reference to PLD's Oaths, but DRKs do lose a bit by toggling Grit back on. 400 more MP at 61 is the cost of a Dark Arts+Souleater, so a 420 potency attack plus the MP drain.
