The Gates Carbon Drive is undeniably less "messy" than a chain on a folding bike, however it is also my understanding that it reduces the gear ratio differences on a bike and that this would be most noticeable on a bike with only a few gears. There are relatively few folding bikes that come standard with the Gates Carbon Drive system, but conversion kits are available. I have seen comments made in prior threads about the reduction of pedaling efficiency of a bike with this system due to its effects on gear ratios.
Has anyone successfully done such a conversion on a 3 speed IGH bike such as a Dahon Curve D3? I'd imagine that the 16" wheel size of this specific bike might even make things worse. I can see where this could be a very cool conversion to do, making disassembly and folding much less messy, but on the other hand if it takes a bike that is already somewhat challenged on the gear ratio side to begin with, making it something almost unusable anywhere that is not totally flat, then there would be no point in using this system on that sort of bike.