After a year of riding, I decided to go a different direction with 650b. Offered to the group is a Velo Routier frame, fork, headset, and bottom bracket. Used, but in excellent condition other than a small chip that was in the tube when I took originally took receipt of the bike. I am the only owner/rider. The frame is an XL (60cm) size, so like me you will need to be of the longer legged variety of cyclist.
This is the version 1 model; details are online at
http://www.cyclestoussaint.com/collections/frames/products/velo-routier-frame
This is the bike as I built it up:

I can send more specific photos on request. Right now the frame set is hanging in my garage, so easy to pull it down and make whatever close ups one might want.
Asking $425 for frame, fork, BB, and HS, plus actual shipping CONUS. Really don't want to ship outside the contiguous US. I think that's a reasonable asking price as the frame and fork alone are $525, but if I'm out of line just let me know. Please respond offline, and thanks!
Mark Anderson
Liberty, Missouri USA