Hi Dietz,
I very much understand what you say about what's going on under the hood, cause I'm an engineer in acoustics and digitial signal processing and have folded impulse responses by hand in the past. ;-) So, yes, the result would surely be "unsatisfactory" or even inconsistent (especially for the sw config) but might be a starting point for playing with MIR nonetheless if it worked...
It's kind of frustrating ;-) having a demo and not being able to experience the full beauty of it. Maybe you can prepare demos that were set up for the Mozartsaal?
Or I just start playing with it and try to put an existing demo on the MIR demo room config ...?! Well, I still have some programm starts left ...
Best,
Till