From speaking to a couple of people who have had them in the past, they're good at invading your personal space, thanks to the stretch-hose, so unless you like bruised shins, I'd avoid it... :\
Plus, there's the problem of the hovering bit that made it unique, it blows all the loose, fluffy dirt about on hard floors before you can get to it, so that's quite a drawback, and there's the turbo-nozzle which can clog up pretty easily, and not actually pick up much (hence the need for a Power nozzle, which doesn't restrict the airflow to power a turbine)...
So, as a novelty, yeah, maybe, but as a serious vacuum for proper cleaning, there are better makes and models...