To all,
I'm guessing this has already been discussed somewhere, but i didn't have the time to look through all the threads.  I'm not sure this would work, but think about it for a minute and look at all possibilities before answering please.  
So say I have both in play in my territory.
Say also that I have only one site....say Babylonia
Also presume that during the battle I somehow capture my opponents hero.. 
Say next time that my opponent tries a rescue attempt I release a hero from raiders camp back to my opponent but then do I discard the hero with a succesful rescue attempt?  I ask because Satan's seat states "If a Hero rescues a lost soul from that site, discard that hero" but Raiders' Camp states that "when opponent makes a successful rescue attempt or battle challenge (ie rescues a soul), instead of surrendering a lost soul, release all heroes from here back to owner"  
I hope you all understand my path of logic.  Does this actually work, cause if so.....watch out!!!  JK.