Anybody tried an all-cleric team?

[Apatheist]

With this setup, is the healing all coming from passive buffs?
I tried a secondary healer last night with 3 clerics, a mage and a warrior tank. It went ok but I needed to have the mage spec into chloro to spam a heal in their dps rotation on the tank.

Group healing, yes. Your tank still needs an active healer to keep him up. Especially on trash, which seems to be harder than most of the bosses (though that may just be because I face pull everything and don't bother CCing at all). You will rarely need to group heal with 4x reparation spams going off. Especially if you use heal/shield proc greater planar essences, such as http://rift.zam.com/en/item/8AC7C185...1/Crystal-Vine or the one from Iron Pine Peaks (both of which are pretty easy to get).

If you overgear the content, yes you can use all passive. My team needs a dedicated healer (who does nothing but spam heals on the tank) to succeed. This is all clerics, of course. With bards, probably not. No idea about mixed chloro/xxxx mages.

Higher tier content is not possible with 5 Chloros. The amount of healing you do doesn't matter when you're getting one-shot. Even in Tier1, if I take off my toughness gear (T1 requires 45 toughness to queue), my tank gets absolutely trucked from all the crits. Definitely not healable.