SInce you have your husband and his/your friends to group with anyhow, there's not much to gain from bringing 5 shammies in a heroic anyhow (unless it's just a badge run). Take 3x shammies and 2 buddies into a heroic at a time and you still get all the shammie drops.



edit-I didn't feal like rolling a tank so i'll just be finding a few good tanks on the server at 70 and swapping out a mage for one of them to run whatever.