We have sold quit e few tandems with the couplers(including one that can be converted double/triple) and the boss has a Comotion single with the couplers that I have ridden. Very nice, they aren't to hard on the bikes lines and you can't even tell the bike comes apart when riding, no squiggly feel. If I needed an easily transportable bike this is the route I would go, the Comotion fits in what looks like a standard size suitcase.