We're both late repliers I guess. Sorry but i've been also busy with some other things the last few weeks so I didn't visit the forums anymore.
Didn't do anything with the iBus anymore. For now I am happy with the way it works. I'm still planning on buying an M-technic steering wheel because mine is worn out and ugly. Then I will also have the Phone buttons wich I can use to command the system. Probably to scroll trough playlists and folders.
Camper looks nice! I'm really curious what you are planning to install in there. "automotive embedded elements which are going beyond the only entertainement"! Seems interresting. Keep me updated!