I’ve met both Adam and Jamie (although notably, not together), and Penn and Teller, too.
Adam and Jamie are pretty much as you see them on the show. They are not putting on personalities. Adam is great fun to be with, a real “life of the party” type guy, and although I had a great time in the few hours I spent drinking with him* (and Skeptic magazine editor Michael Shermer and the lovely Kari Byron) a couple years ago, I can imagine that some people might find him tiresome after a while.
I think Jamie is that type of person. He’s serious, reserved, and although I wouldn’t necessarily use the term “control freak,” you can tell he likes having things (like his clothes and his shop) “just so.” He’s a much more private person, and doesn’t have the same need for attention and an audience that Adam thrives on.
However, I did get the strong impression that both men respect each other professionally.
ISTR reading in some article about the creation of the show that when the Australian producer approached Jamie for a host of the show, he didn’t see himself as right for the job, and recommended Adam as someone who would enjoy being in the spotlight. But the producer liked the “odd couple” relationship between the two, and persuaded Jamie to sign up, too.
However, I’ve gotten the sense (just from watching) that as time goes on, Adam is still having a good time doing the show, but Jamie is enjoying it less.
As for Penn and Teller, I saw them perform separately at a Renaissance festival in the 1970s before they were Penn & Teller. Penn did a comedy juggling act and Teller was a silent magician. Since then I’ve seen them perform (together) at least a dozen times, and have met them after shows and at book signings several times.
I think what’s been said above is true: they are very good friends and have a lot in common, but don’t need to socialize “after hours” because they spend so much time together working. I think that if they didn’t work together, they would probably socialize more, which is probably not the case with Adam and Jamie.
RickJay: Thanks for setting the record straight about Laurel and Hardy. Thirty-some years ago, when I was a teenager, I knew everything there was to know about them, but it’s been decades since I read any of the several books I have about them.
*Think I’m lying? Here are the pictures of me and Adam (taken by Kari) and me and Kari (taken by Adam).