How's DK tanks nowadays (3.2)?

[Diwa]

I saw a lot of QQ in WoW forums about 3.2 tanking nerfs and uncontrollable threat control. Though in Elistjerks I saw a lot of DK tanks converting to Blood spec, 560+ DEfs and 30+k HP (are we saying farewell to Ebon Plaguebringer?) . I have one team @ 60 that has a Tauren DK tank and I'm wondering if I have to push through with it or just replace it with a Druid tank.

I would like to hear an update especially those who has a DK+4shaman setup if they are still progressing in heroics and what problems are they encountering right now after 3.2 patch

Thanks