Probably not a good idea, as the Saints use 203mm rotors (same as hayes, avid, etc), while Hope only offer 200 and 205mm.
I'd suggest hunting down some other brand 203mm bladed rotors if that is what you are after, there are some cool ones available these days.
I know Kram on here runs a cool set with his Saints - would be worth shooting him a PM.
-Udi