Hmmm, I see. 😊
Right now I don't know about dedicated demos, but I _do_ know 😊 that I did several mixes using Pernegg (which is maybe the most accomplished MIR Venue of all, apart from Synchron Stage). I don't know if they are of any interest for you, though, as the actual results depend a lot on the production and the type of music.
-> All of Manfred Plessl's score for "Life Guidance" relies on Pernegg (in some kind of 3D setup, using the microphone position 4 from the choir's balcony for an additional height-layer). The trailer in the link uses parts of the original score.
-> All pieces of JBBG's most recent masterpiece "True Stories" were mixed in MIR Pro, some of them using Pernegg for the less "groovy" bigband pieces (most notably the opener "Ouverture").
... but I have high hopes that fellow forum members will chime in with more telling and "pure" examples and comparisons.
Kind regards,
/Dietz - Vienna Symphonic Library