That's exactly what I did with PLD there. Sword Oath vs Sword Oath knight, HG Holy Bladedance, go full DPS before it swaps back to shield and he dies. I do it with DRK too, no Grit, Living Dead. I only go tank stance if my knight is in Shield Oath because there is little to no point in doing more damage in that case. Honestly, if the Sword Oath knight doesn't die before swapping, your group's DPS is shit. After one knight dies, there is no Oath anymore, so the second knight hits like a wet noodle and you can eat Holy Bladedance totally naked without even your tanking stance.
