We have just bought a second hand Co-Motion Speedster Copilot. We decided it would be nice to do some flying/touring sometime in the future so when one of these came up (very rare down here in New Zealand, may be the only one) decided to get it. It has the Rolf wheels, Wound Up fork and Gates belt as well.
Just thought I would share on how it seemed compared to the 2009 C'dale we normally ride.
The gates timing belt definitely felt a bit more positive which was nice, but nothing to rave about.
Ride seemed slightly more comfortable, but not much in it.
The main difference I noticed was in stability. It was a very windy day and we definitely didn't get blown around as much as on the C'dale.
It was also more stable and easier to hold a line when pedaling out of the saddle.
So far it has only been the one ride for 1 1/2 hrs but so far we are very pleased with it and it is very nicely made.