Well I'm pretty good at both when that's all I'm doing. I'd say I'm a better thank than healer though, and since the healer is really just a supporting role I'm hoping my tanking skill won't be compromised.

I agree that uld toc will be hard. I'll probably need to outgear those first. For heroics / raids though I find the damage I take tnaking isn't really that high. And also when I'm tanking DPS never gets aggro from me and only take damage from AoE or random aggro switches (like poison spears, random boss frostbolts, eck, etc.).

I also have 2 shammies available on separate accounts (both level 60 where I left them after RAFing). Maybe I'll try 3 boxing with the 2 shammies instead. Shouldn't take long to instance boost em to 80 and I like the idea of chain heals for larger groups. Kinda boring is all, but my warrior is an enchanter, so should make some decent coin while doing it. How are shammies at healing on the run? Would I need to park em before each pull?

Are there any viable hybrid shammy specs? This is the only class I really don't know. I know the dual-boxing community is in love with them too. Am thinking if both were resto/elemental spec'd they could dish out some helper DPS at 80, keep me topped up, and also toss some AoE heals. Would love a spec example.

If I'm always going to be parking the healer, than I just don't see any other class outdoing pally heals (prot spec with holy gear) for survivability and amazing single target burst heals.