My guild is doing our first Gruul's lair run tonight in partner with some allied guilds, they opted to have me tank Kiggler and I will most likely end up tanking Gruul (not definite but I know the other tanks there and to my knowledge I am the best geared).
http://www.wowarmory.com/character-sheet.xml?r=Azuremyst&n=Khalith
Here is my armory, my def is still a little high, I just redid almost all of my gems and putting in solid stars of elune, my head piece needs some more as does my belt but after that regemming and enchanting I've done I'm completely broke so the rest of the stam gems have to wait.
I haven't done it before and haven't been able to find out about pallies tanking it, so I was hoping my gear is up to par on it.