Sounds pretty decent (and a tidy build, btw), but sure is a tough call whether it sounds "tubey", what with running it through a couple of other boxes and a pignose. What's it sound like as a standalone thru a clean amp? Which of the several schematics on that linked page did you build? And where'd the cool hinged box come from?
Were you looking for a particular sonic character of tubes (like compression or frequency response)? Guess I just tend to go for what sounds good to my ears these days and "tubey" is a pretty subjective (and oft debated) label.
rob