I'm not sure if it actually exists, I pretty much made up the term "urban cyclocross" to describe the way I use my CX bike here in Manhattan, which is far away from those romantic muddy Belgian fields where CX bikes belong. While I hope to one day get my CX bike into the fields and into the mud (and maybe even into a race), right now my "CX" riding is limited to a more concrete and asphalt setting. Near my apartment is Riverside Park, the northern part of which includes twisty, hilly, and crusty bike paths and random staircases where I practice my dismounts and mounts. Likewise, I work my bike handleing skills weaving in and out of taxis, pedestrians, homeless people, and random other urban stuff. Going over the George Washington Bridge is an obstacle course in and of itself. Actual dirt and off-road is pretty limited here, and most of it is illegal to ride on and subject to fines and summonses.
So, does anyone else here ride "urban cyclocross"? If so, any special gear you use? For example, I swapped out my Hutchinson Pro Cross tires (28c) for Specialized Infinitys (32c). These tires are heavy and require a crobar to get off the rim, but are bombproof against many of the elements to be found on a NYC street (can anybody reccomend an easier tire to remove from a rim that still has some flat-proofing?). Also, I'm considering riding with a Camelbak system to hold my pump, water, tools, keys and phone to keep those things off my frame for easy shouldering up stairs.
Urban cyclocross; a revolution in cycling or a temporary way to play around until I make it to the fields of Belgium?