We could tell you but then we would have to bend you over a round barrel and flog you with many small branches! Jason's signature construction does look remarkable, the veneers on the side boxes make some beautiful surfaces and allows him to make a potentially plain surface remarkable.
Good luck on your investigation.
I believe he lays up veneers on a form. I vaguely recall a photo of this somewhere.
Jason is full on one of the most talented dudes I have ever spoke to. And a heck of a nice guy.