Consider what spells are available to both the holy and war schools
The one holy and war spell currently in the game is armor ward. So he'll probably use equipment. General cygnets ring is warlord only. however, there are several holy soldiers. this suggests that he will use soldiers, but not enough of them to the point where he would actually need to use the ring. He has access to temple of Asyra, so he could summon more holy creatures if he wanted. He has quite good access to healing spells too. I'm guessing he will have a familiar weapon, that's can cast holy incantations like minor heal or lay hands on his creature(s) or himself. (Maybe enchantments too.).
So, he will specialize in equipment. He will have good access to and benefit from using soldiers, but he may or may not specialize in them. He has good access to healing, but healing is unlikely to be as big a thing for him as it is for the priestes, but it still might be quite significant. Holy spells tend to be more on the defensive side, so he'll probably be best to play as a tank. He'll need something to set him apart from the Anvil throne warlord though.
Think of all the spells that are war mage only as opposed to warlord only. And holy mage only rather than priestess only.
Joseph true blood can be summoned by temple. Divine intervention means that he might sometimes want to teleport himself or another creature a long distance as a "free" action.
Oh wait. He has access to conquer, so he'll probably use soldiers after all. He will likely pay triple for arcane, since he has access to harshforge plate. He also has access to altar of carnage and eisenach's forge hammer.
Wait a minute! Altar of carnage, temple of Asyra, forge hammer and conquer? He IS using a soldier swarm. A holy soldier swarm!
He still needs to set himself apart from the warlord. The one possible ability I can imagine that would synergize with both soldier swarm and equipment in a different way than the warlord would have to be the ability to put equipment on his soldiers.
Edit: the lack of general signet ring is perplexing me. Plus, if he's using the temple, he'll want asyran clerics, not just soldiers.