Hi,
Yes, Dave Hinton started making them in volume, and we are now continuing as he has other things he wants to concentrate on.
I think it was Jeff Brimble & "Matt" who were the first to think of something similar a few years back. It was February this year that Dave started flipfast.co.uk and then began supplying various distributors.
You can of course DIY something similar if you want. There are a couple of slight mods to the latest ones, but you can get essentially the same effect yourself. We are hoping to make further improvements in time.
Paul