Oh, that sounds like a potentially fun team indeed!

I've yet to box with a Mistweaver myself, though I do quite like playing them. I've PvP'd with one a lot during MoP, a habit I'm trying to get back into atm.

As for multiboxing, this evening I pushed four more hunters through the Iron Docks intro myself, and I've been playing around Tanaan with those - together with the aforementioned warrior (though she's on her paladin for this). Been a lot of fun, and particularly lovely to get some 650 and 675 pieces for all of them, as they were only levelled fairly recently.