I don't really know. I've seen them advertised and listed on Craigslist but have never been too interested. I am pretty sure the bicycle targets potentially new, mature cyclists. Maybe they work fine and really are very easy to use therefore making cycling more fun. I've always found cycling to be huge fun... even with my down tube mounted friction shifters on my vintage road bicycle(s).

But I really do like the modern bicycles too. I have no idea where bicycle technology is heading. I only hope any developments are good for cycling.