my friend has this green frame, NOS (scroll down for pics, the first photos are of XC frames, the Ridge comes after). It's labelled FTW because it was made by Frank The Welder after he split from Sinister. The design snd specs are the same because he still owns the patent. If you are interested, please let me know and I'll contact him.
right, just called him, he'd like how much he paid it, 1000 euros (around 735 pounds) consider that a custom frame by ftw costs 1900 dollars (scroll dowwn this page where Frank makes a quotation http://www.frankthewelder.com/?page_id=395). He used to be the FTW distributor, if you want you can contact him at sales@froimport.it
ah, just for your consideration, it can also fit 650b wheels