8pen - New Android keyboard application

Downloaded the first paid application on Android market today - 8pen. I found the concept of re-inventing the keyboard on a mobile device quite interesting considering that's one thing that frustrates me about HTC incredible. My concern as a user is about the learning curve. From this video the learning curve would be a issue, some comments while downloading the app were also concerning learning curve. Interesting thing would be to observe how the user experience would be clashing with this form of innovation. Aspect of user experience in question how the user react to the learning curve associated with innovation. My friend Ray Matsil posted this link on his facebook since he uses facebook as a form of sharing innovative things online. Price for innovation = 1.58$. :)