I have searched as I am sure this has been asked before but I couldn't find an answer.
I have been a disc priest since I hit 80 over a year ago. I love disc but I admit that I am quite interested in Holy, however I gear almost solely for disc. This means I gem straight SP and couldn't care less about spirit or intellect.
26k mana pool
Armory link for good measure:
(believe me the hit pieces were better than what I had)
I do have a shadow off-spec so there is more haste and spirit in that gear but of course there is also a lot of hit.
So my question is, how compatible is my disc gear if I wanted to change my off-spec to Holy? I would definitely switch out any non-hit pieces from my shadow gear, but I don't think that is too many pieces.