[Scott Hebert]

Inquisitors are quite useful in removing enemy dominion from your territories, whether newly-gained or not. When dealing with certain enemies (Ermor comes to mind), this is not an inconsequential ability.

I find inquisitors most useful when you're besieging an enemy capital/place where his god is. I have quite a few times removed all of his dominion before breaking through, which makes the resulting battle much easier.

If you're looking for 'dominion switchers', my suggestions are as follows:

1) Seraphine (Prophet or not) - Flying, Stealthy lvl3 Priests, for a very cheap price. There's very little not to like about these ladies. As a Prophet, she generates Dominion on her own, which just increases the gain.

2) Skeptic (Prophet) - A Prophet Skeptic for GE Arco absolutely kills dominion elsewhere. Generally, not even an opponent's god (by him/herself) can compete with a preaching Prophet Skeptic.