Thanks. Some useful input here. As yet, no shops in the UK stock them. They're only currently available thru www.hubjub.co.uk (good site) so the likelihood of seeing one up close enough to make a decision is fairly limited. The price is quite forbidding as well. For the hub, cog and 120mm conversion kit it costs £170. I can get three full sets of Miche for that. I like the idea, but I think I'll wait.