Quote Originally Posted by nonsi View Post
"Natural armor is the same as the base creature’s but applies only to ethereal encounters. When the ghost manifests (see below), its natural armor bonus is +0, but it gains a deflection bonus equal to its Charisma modifier or +1, whichever is higher."
Yes, see my clause about it only applying to ethereal encounters. I've simply used that (and mage armour, and ghost touch) as a precedent for making a unique special quality for the angel/demon. It's a special case, in the same way a ghaele is a living incorporeal creature (in globe form), or the light rays of ghaeles/lantern archons overcome all damage reduction.