It obviously doesn't work on the final five. It was a pretty stupid design. Clearly, the person being tested should have been in a cage or something. Remember when he got the positive result with Boomer? He was afraid she'd kill him if he said anything. I also liked the scene where he was itching to link with the Cylon mainframe. I really think he'll be loyal to humanity to the end. He, Athena, and probably Tigh. I'm not so sure about the chief anymore, and the president's assistant is just waiting for the right time to strike. She's on some Nietzschean "Beyond Good and Evil" kick and is loyal to no one.