Recently used AO for a project here at work. The university I work for recently had a major remodel our of Gymnasium building. It was pretty much a gut job and it has been a major success. We sometimes use building/projects images as art work here in the Facilities building. So I used AO to combine the '54 original building elevations with the new additions as “retro render” of sorts.
Original building elevations…
Finished AO render…
AO was a great tool in this process!