What? All experienced tanks (who raid) do tanking in mostly DPS stance whenever they know they can take the punishments from tank busters, via healing/CD management. There is a reason why most tanks can't clear Gordias Savage, and that is a mixed of DPS, planning for CDs to mitigate the tank busters and doing mechanics, while making sure aggro is okay. You don't clear savage with 400dps as a tank.
