I dump as much potency as I can so I can turn off grit more quickly.

Dark arts, salted earth, immediately unmend, plunge, scourge, carve and spit, dark passenger, hard slash, blood price, low blow, spinning slash, power slash. Then I do power slash again if I have over zealous DPS/heals. Then it's turn off grit until tank busters and alternate dark arts soul eater and delirium. Scourge runs out after 4 combos so reapply it always. Also, during my opener I usually get low blow and reprisal procs, so I use them as I get them.