Yes, it would definitely be nice to have MoI screenshots included along with the rendered image.

Not only to show off MoI but actually to show off your model better as well.

The MoI screenshot will show some more various structural details of your model which may not be so easy to appreciate in a render only.

Also I don't want people to think that you must have a rendering in order to put something in the gallery - it's totally fine to have screenshots only and no rendering at all.

- Michael