Posting this here to cast a broader net, it's a general question after all.
Thinking about having one built, if anyone has one, curious how you like it, how it's held up, anything else you can think of, etc, etc. It would be a custom built job with their I-tube material, tandem, brakes, thinking about stainless fenders too. They ain't cheap, so I thought I'd see if anyone else has experience with one.