I would actually like to try it out, for those days where i want to wear my hair down but fell asleep without putting my satin rollers in before going to bed, and dont want to use a flat iron to fix the kinks. Plus if it works with cold air than you could use it everyday on relaxed hair without creating damage.
The only issue i see is that its likely to work better on longer hair and not short hair and i definitely wouldnt use it on wet hair.
Shame they don't deliver to the UK