I have set this up now - gone with DK+druid support. Using the old version of keyclone that I know was ok'd - (only clones keys, no smart-clicking or anything - but thats not too much hassle, I have a triscreen setup for them on a screen each, and wowhead on the other )

I have the DK at 69, druid at 70. If I wait for DnD cd's before each pull, I can get away with playing from the druid perspective (I haven't had pugs pull agro from dnd yet - so long as they don't hit first) - but thats getting risky for when stuff goes bad.

I have been having trouble setting up my healbot UI so that I can play primarily from the DK tank side of things while healing. For now I have specced a funny hybrid boom/resto build that is just built around dots+spam, rather than optimising eclipse procs, or ideally healing. Healing + tanking gets me instant queues, Healing+dps or tanking+dps gets me 5+ minute queues, and dps+dps gets me 10+

For now, I have also swapped to questing instead of doing 5mans since I hit northrend content - my DK was getting crushed and crit to peices trying the first instance.

Still all in all - much preferable to solo