Has anyone ever used
this? It looks extremely cool, and it would definetely suite my digital notetaking desires. It doesn't have software for the Mac, but after looking online, I've found AppleScripts to convert its file format to PDF for the Mac.
I'm wondering how it works, though. If you can put a notepad on it, then does all the functionality lie in the $30 pen? That doesn't make sense. Furthermore, could I put a spiral notebook on it? I just don't know!
Please enlighten me

.