I'm not quite sure if this has been posted yet, i got the idea from reading this thread and i thought i would share it with you guys.
http://www.mmowned.com/forums/wow-exploits/182318-two-2h-bladestorm.html
Basically using that exploit you're able to dual wield two 2h weapons and use bladestorm but only until you zone. When they implement the dual spec system, you'll be able switch to fury, equip two 2h weapons and then respec back to arms and bladestorm while in an instance or BG lets say. It won't cost you any gold to keep switching specs either.