Okay, I've been looking up non-lethal Cleric spells that might be useful in combat situation. There aren't exactly a lot of them. There are a few that might be useful if we've got prep time before the guard squadron comes charging the door or whatever. There are an awful lot of spells that undead won't like but I'm unclear as to whether or not they count in the whole Not Killing Innocent Soldiers scheme of things. They're already dead so...

I'm tempted to roll up Wind Walk as my 6th level spell. It's handy for the clanky non-sneaky members of the party and if something's wandering around Argonath in a gaseous form, well it's probably just a vampire, right?