It seems there is finally a decent mounting option for those of us with Double DIN slots wanting to use touchscreens.
http://www.bybyte.com/
They have a mount for the Lilliput EBY701 and the 629GL screens.
If these are decent quality this will make it soo much easier to mount these screens without the need for moulding into the dash panels (which most often doesn't look very factory anyway...)
I've ordered one of the EBY701 mounts, so i'll see how it goes and let everyone know... :-)