At the request of some interested warlocks I've updated my beta guide for warlock tanking for live mechanics. Just so everyone is currently on the same page, currently we can easily tank lvl 90 dungeons, I'm working on testing challenge mode viability but it requires a fairly different BiS list than I currently have to see how we compare to other tanks in there and we require a holy paladin healer. I'll have more to say on this by the end of the week if I don't lose power/internet for too long with this storm thing.