I'm playing a cleric of Sarenrae in an Age of Worms PbP here on the Paizo boards, currently at 9th level. My cleric, Friar Feres (you can take a look at his build in his profile), was built using 20 point-buy with the goal to be mainly effective against undead - the Sun and Glory domains really synergize well together for this. Interestingly enough I also typically include the level 2-5 Summon Monster spells in my daily spell preparations. In my opinion, as a cleric of Sarenrae you could be very effective at both summoning and channeling, and even be a significant secondary contributor to combat. For example, looking at Feres' build I could've easily switched Lightning Reflexes, Iron Will, and Great Fortitude for Spell Focus (Conjuration), Augment Summoning, and possibly Sacred Summons (not as sure about that one). Plus, if I were building Feres today I would definitely take the Heroism subdomain of the Glory domain.
All in all, I think such a cleric would be a strong addition for your group. Have fun!
