Some of the newer Cannondale mountain bikes use a really trick single-cylinder fork. Not really a fork, as it's only got one tube. This necessitates an unconventional wheel, but it also has a disc brake, which I'm sure interferes with the Jones.
http://www.cannondale.com/bikes/08/cusa/model-8VM3.html
Low-tech bikes are quite adequate for road-course measuring, but it's a shame to leave the good one in the garage.