i think it would work. with BM, you have BW, you have a much better tanking option. i'd give the MM hunter a dps type pet with poisons or debuffs like the owl's screech or the monkey's thunderstomp.

get trueshot aura.

only difference in shot rotation is... nothing. just dont use aimed shot. great for pvp when target's not looking at you, but in pve, you're better mana-wise by just sticking to serpent sting and auto shoot. arcane shot on occassions. you dont get the really cool shot til level 62 anyway. and to maximize both builds, you may have sacrifice one of them due to shot rotation/speed. but worry about this later. make sure they both have the same speed weapon so their shots stay in sync.