Yes, not only do I build these but I own one. Riding a fixed gear on the road can be a really excellent workout. There is no better way to really feel connected to the pedals when you can't shift and can't coast.
This frame is the 'Ultimundo' tube set-S-3 down tube, OX Platinum top tube and Columbus 'Life' rear stays. The frame is under 4 lbs. but feels very stiff due to the large diameter S-3 tube.
The fork is an Enve tapered road fork so that a front brake can be mounted for riding in traffic.