I know they have been out a bit, but I just managed to accidentally stumble upon owning one. As far as I can work out they work fantastic. It's not QUITE the same experience as using the Apple BT KB, you have to be more assertive about pressing the keys, but it's pretty much a win/win as it is MUCH faster and less errors than using the onscreen KB. The keys are not small and they are not something you have to work at finding. It really seems to be a fantastic idea. I typed this up on the ipad with the BT KB and it was as easy and pleasant to use as my MB. That is saying something, IMO.