Tanks using cooldowns in dungeons? Whether DRK, WAR, or PLD this is quite rare in DF from my experience and a big reason why the majority of my comms go to DPS.

The only reason why I favor any tank over a DRK is because I don't have to worry about bloodprice and can spam holy at will.

I just always try to remain adaptable regardless of which tank is leading the way, and recognize which ones are healer conscious, and the ones who only see me as a heal bot.