I wanted to install this on my existing raspbmc install but the instructions are fairly lengthy - lots of steps and dependencies - and I wasn't sure if the pi is actually fast enough to run this and control XBMC at the same time, which is what I really wanted to do. It does look fantastic though.

It just occurred to me that a pi is so cheap I could get one and install the SD card version of Jasper and control XBMC over its API :)