Interesting article in the Las Vegas Sun about Nate Santucci, P&T's "Director of Covert Activities" here. Santucci still considers himself a stagehand:
While he was attending UNLV, [Penn & Teller] hired him in 1994 to help set up their warehouse. He’s a stagehand by training and he grew into the job of making magic props. He’s never acquired an interest in sleight of hand and abracadabra.
Thanks Itricks for the link.