Just have to realize threat doesn't change. They'll all go running back to the tank. I'll admit, I'm looking forward to playing with this one as well.
It's going to be really useful when your raid/party doesn't feel like stacking when they are supposed to.
Get in touch with warrior that knows shockwave. Use GG on tank target. Have warrior use shockwave. mass stun. Use GG on enemy player on EotS when they get blasted/disengage/MC'd off
My friends and I wanna try it with his Shammy on EotS and AB on LM, oh the lulz we'll have in PvP. <3