I can't answer the question about the cue he used at the U S Open but in the more recent accustats challenge he was using a different cue at the beginning and then borrowed a Viking cue from somebody else and played with it. At about the 2 hour mark he changes cues.
http://www.ustream.tv/recorded/27075930/theater
He has a tattoo of the Viking logo on his arm.
http://www.ustream.tv/recorded/27075930/theater
He has a tattoo of the Viking logo on his arm.