The penetration of magical defenses is a great idea, since there seem to be a lot that laugh off missile weapons. That is certainly needed.

The only reason I specified non-exotic ranged weapons is because I haven't seen most of them, so I don't know what they're capable of, what their specs are and such. So I played it on the safe side. But I do need to look through them.

I'd like this class to be as martial as possible, but maybe some supernatural talents at the very later levels could be possible. I think it'd work even better as magical prestige classes, though you picked a great two classes to blend for the idea.

PS: And sorry it took me so long to update the first post after saying I was going to. Got sidetracked by something important and couldn't update til just now.