Read this post last week and started boosting my 4x shammies and 1x pally with my 70 holy pally. I got from level 22 to 37 in 3 days (not playing time...didn't keep track of it unfortunately - prob around 6-7 hours maybe?).

The pally worked out great and with seal of wisdom, one mana stream totem, and heals from the shammie, I'd complete a 15-20 mob pull and have 100% health and atleast 75% mana remaining. While I may not be able to kill as quickly as a mage, I really limited any downtime. Also wearing plate helps!

Down side is that it is pretty boring. I think it was the 15th or so run of armory where I almost cleared the instance, but somehow fell asleep in between pulls. I woke up and found that a repop had killed my whole team!

So now the shammies are 37 and the prot pally is 34. The pally is a little behind because I concentrated on the shammies originally with the 70 pally. Then I bit the bullet and got a 6th account. Now I rotate the pally in the shammie team and is working quite nicely.

I'm going to try ZF at 35 as I'm sooo done with SM!

edit: Last 10 or so runs i stopped looting as it was taking me forever to loot and to deal with the loot (vendor, mail to bank alt, etc).