Niner maybe? No option for belt drive though unless you can find a specialist to "cut and shut".
Niner one9 (700c/29", ebb, SS, disc brake, aluminium)
http://www.ninerbikes.com/one9.html
Niner s.i.r.9 (700c/29", ebb, SS/gears, disc brake, steel)
http://www.ninerbikes.com/sir9.html
There's the Nicolai option too but it's kind of expensive (but has almost every option you could wish for)
Nicolai Argon TR
http://www.nicolai.net/products/e-fr...r.html#argontr
p.s. thanks for the link to my bike geek thread