The Traveler and John Twelve Hawks

I searched the forum and found one reference to this sci-fi book. I picked up the book from the library. The book is pretty good so I decided to google the author to see if there were any other books by him. I discovered it is his only book at this time and he is a shadowy person. Some people think the author name is a pseudonym and the whole persona a publicity stunt. At this point, I am leaning towards stunt to sell books.

Anybody have any thoughts on this? Here is a link to an interview and the wikipedia entry for the author:

http://www.sffworld.com/mul/146p0.html

http://en.wikipedia.org/wiki/John_Twelve_Hawks

Read this book a few months ago, really enjoyed it. Had not looked into the author though, so I didn't realize the big mystery. Looking forward to the next installment.