Hi R2dx
Many thanks for the enquiry and interest in Lumion.

I should mention first that there is a current full featured and content version (v9.0.2) Trial available via our resellers. Please see our
Knowledge Base Article:
Is there a Trial version of Lumion?In regard the features sought, both of those as explain are not really covered by that Trial, and are not specific features of Lumion, but there may be some options. To consider those options, see if you can get the Pro Trial mentioned above.
1. Rendering elevations:Unfortunately no, those are not available. Thanks for the +1, as some other users have also suggested. Technically, it is very tricky in 3D and tends to break lots of other stuff in the render process.
Some of our users do emulate elevations by using a very high
Focal Camera that then produces the flattened look. You can have one
Clipping Plane for side elevations. The result will sometimes cause a little quality problem with shadows and some materials, but most users seem to be able to adjust those enough that they are OK with the result.
2. Walkthrough/pedestrian mode:Not in real-time VR, no. Again some users have also suggested that as an additional option to the static image VR that Lumion does support for VR headsets.
There is, and a number of users do use the
Lumion Viewer for real-time consultation with client based meetings, or providing the
Scene direct to the client. The
Lumion Viewer is a standalone, installed, non-licensed software available for Pro licensed users.
You present and can do walk-throughs, and playback in realtime of the movies on a PC/PC connected screen.
Some users are now also doing more interactive design phases with clients by running both their modelling software and Lumion at same time and with our
LiveSync technology, doing real-time update of the design for client input changes. Then the result is seen live in the full 3D context related world that Lumion can provide.
As you are presenting to screen it does not have that immersive element of VR headsets. But then, it does not have all the issues still surrounding use of headsets especially in a client meeting/engagement environment.
Hope that helps give you a better idea of Lumion. And, have a chat to your reseller about getting the Pro Trial.
Let us know if there's anything else we can help with.