Ahearne custom 'cross bike is built and ready to rock! (I apologize in advance for mediocre cell phone pictures.) It's single speed only with Paragon sliding dropouts and disc brake tabs. Brad is planning on doing some racing on it this Fall, but mostly using it for urban assault and Forest Park runs.
Ahearne Cycles website.
Note the hydraulic housing guides in between the two seatstays. Pretty cool.