I dont have my N800 with me ATM, so I can't try it myself, but.... What I found most interesting is that the guy in the video says it works on both Maemo and S60 touch screen devices. (And a look at the download page confirmed this.)

So I'd be interesting to know how much of the code they could simply share between the platforms. What's in the package? Any signs of components that would support cross-platform-development? Or did they really re-write it from scratch for Win, Maemo and S60?