February 05, 2011, 01:42:30 pm
No, the Demo version does not ship with the full object library, so there would be a lot of red "question mark" objects if he tried to open your scene with the Demo version. Until there is a standalone viewer, you will need an installation of the full version of Lumion and of course the USB dongle to inspect a Lumion scene on another PC.
For people who are reading about this topic for the first time I should hasten to add that there's already a bunch of requests that deal with this issue on the wish list, not just requests for a standalone viewer but also for ways to collaborate on projects (e.g. a Merge function etc) and for making scenes more portable in general (so you don't have to copy scene/library files manually).