Stealthy Inquisitors?

[BigJMoney]

I was going to begin my 3rd Dom2 game last night. I thought Marignon sounded really cool, with their Inquisitors. However, I found out that none of them have stealthy! What is the point of having double preaching effect in enemy domain when you can't even get into the enemy's territory? It seems those Inquisitors are merely a defensive precaution. And, fairly expensive for such a defensive role. Are there any ways to make units stealthy? Are there items or spells that will do it?

Thanks,

=$= Big J Money =$=