p/ch gets an elite that boosts the damage and eliminates the CD, so getting interupted won't really be an issue. I'm just doing some research to see if p/ch may be a viable dps combo, something along the lines of p/s
Ahh, didn't know about that one.
Well, in terms of damage, it won't hit as hard as water spells. Priests have no light mastery, and Chains of Light is a light-based spell. Kind of depends on how big of a boost in damage it is, though...if it's just a flat amount in the tooltip, I don't see it being better than P/S for damage. If P/Ch has a light-based mastery though, then that changes things. The elemental mastery passives add a massive amount of damage to spells.
Always worth testing, though. Not many people are trying out the dwarf priests, so it would be nice to know what they're capable of.