No idea other than that they're fun as all hell. I passed one up last week, but it came back to haunt me in the form of a Ross 10-speed that was given to me today. I have no idea what I'm going to do with it though. It would make one hell of a frankenbike.
Does it have a shimano brakeset on it? They appear to be cheaper, yet very serviceable, practical machines. I have no experience with Japanese internally geared hubs pre-Nexus.