Cyclo-Cross Bike with Disc Brakes

I am looking for a production cyclo cross bike that uses disc brakes. While I will use it for an ocassional cyclo cross race, I plan on using it more for a year round commuter (I live in MN, the frame would have to fit 40c Nokian studded tires). So far the only production model I can find is a Cannondale Cyclocross Optimo Disc 2 which uses Tiagra as the baseline at about $1400 US. I am looking for something more in the 105/Ultegra range and would be willing to spend up to $3000 US. There are many custom frame builders that provide the base I am looking for (I lust for the Calfee version :p), but after buying the gruppo, etc. would range about $4-5000 which is outside the price range I am looking for. Redline used to offer a model that fit my needs but has evidently decided to discontinue the disc brake versions. If you have any leads for me, I would greatly appreciate your help. Thanks!