I went with the gavel/shield then started picking up honor/arena healing set peices for the Paladin since that's all I do in BGs / arena with him (pewpewpew on the shams of course). I tend to not spec out of protection either; just toss on the healing set and go from there. In a mix of s2/s3 + honor stuff I found that the paladin runs OOM as prot spec about the same time all my shaman are OOM as well - and at that point I figure if the other team's not dead I am screwed even if the paladin could have tossed out another chunk of heals with a better spec.