well, I guess my question is wether it is possible to add brakes at all. I dont think the front fork is drilled for a mount and its a carbon fork, so Im not sure whats involved or if its even possible. The guys at the bike shop didnt seem to think so, but I want a second opinion...

what are cx-brakes?

I would probably add a mountain bike two finger lever if I added a brake, would like to keep the drop bars and hear you on the symmetry.