Whilst the basic keyboard functionality works to control XBMC, I agree that active support for displaying info about what's playing, volume state and playback position would be great.
The ability to connect to XBMC and display information such as details of what is playing would be an awesome addition to this app.
Xbmc works with the programs already. I have not had any problems. Xbmc's themes that use only remotes work with the keyboard as well.