hi,

according to some sources, see e.g.
http://www.webupd8.org/2011/09/cairo-dock-240-released-with-custom.html
 it will be possible in Ubuntu
to run the desktop environment using compix+cairodock ;
this is achieved adding a session to the GDM sessions in
/usr/share/xsessions/...

Would it be possible to have this feature in Debian as well?

a.