Every spec that can use a 1h sword can mog into it. Per example my Ret Pala can not mog it, but as holy or prot i can.
My Frost DK alt can (And currently are) etc. I farmed it on my ret paladin.
That wouldnt help you. You need both bindings on the same char. Some people get the quest when the first binding drop. It didnt for me, so i farmed MC every week for four months until i finally got both bindings, then i went to the NPC in Silithus and got the quest and the rest was done in 30 minutes.