I play 8 shams these days and bump it up to 9 with a prot pally for pve. I'm in the process of gearing a resto druid as well for healing to see if that makes pve easier for me. I only take the 8 shams to LFR and that is a lot of fun, it gives a lot of focussed burst for events such as elementium bolt and blistering tentacles which can wreck a raid.

I use keyclone and don't really want to spend the time to switch over to ISboxer so video feeds and click healing with the druid is out of the equation for now. I'll just keep slowly tuning and re-tuning my set up to include it effectively I guess, just like how I added my tank in.

As for pvp, the 8 shams dominate a LOT more than the original 4 I used to run. I only do AV/IoC atm but they are 2 of my fav BGs and I'm only HK farming until the end of cata anyway. Since rolling with 8, I have earnt 5 stormpike perfections in the last 2 weeks, whereas I had managed just the 3 total in the previous 4 years.

I do find 8 harder to co-ordinate than 4