I'm a really big fan of Tramp's work, IMO it ranks with Calvin & Hobbes, and I look around the internet from time to time to see if there's any word on him. I've seen several different articles and media pix showing that he is indeed a cabby, but I thought I remembered him being in Chicago. There was a thread on RPGNet (IIRC - it could have been elsewhere) a year or so ago where a guy basically said "I knew him back in the day, I'm occaisionaly in touch, and yes that's him"
There was something odd with the situation where he quit Dragon - the people who were there and know what happened all refuse to talk about it. I have my own guesses, but I don't want to start rumors with my own speculation. Various people have been very clear that he's out of RPGs and doesn't want anything to do with them ever again.
I think it's a real shame. I was one of the guys who shelled out the money for a Wormy anthology (which was a lot of money for an 11 year old) and just got a refund, a "Wormy supporter" button that I still have somewhere, and a certificate of appreciation. I'd pay quite a bit of money for a Wormy anthology, and more for new material. Oh well.
There's been a couple. One for sure is Jolly Blackburn, post which I linked to in my response way back upthread. I believe he was also identified on the Paizo forums as well, which is also linked to in that post. That's definitely Dave Trampier. And, like you said, according to them, he is definitely, firmly out of RPGs.
I was hoping that maybe I'd missed an issue or forty and I'd find a proper ending on the Archive Ah, well, I did get to see the whole thing right from the start (I think my first use of the Archive was to read all the Wormys and all the What's New?s. At some point, I'll have to pop them back in to read the complete Snarf's Quest, Robinson's War, and Libram X).