Hi Gino,
I sold mine recently because I don't have the competence to make my own measurements and the measurements I made when I bought it, were in a TV monitoring studio, which was very "dry" sounding for my taste.
I had to go to Munich, Germany to do it, because in my country (Greece) obviously nobody has any idea about the Realiser.
But to answer your question, yes, I do miss the spatial imaging of the speakers in that studio. When you listen to the Realiser, you are immediately transported into the room in which you made the measurements.
My advice is, if you are near a studio where they take measurements for the Realiser, go listen to it first.
If you like it, absolutely get the Realiser, because you will be transported there everytime you listen to it.
I'm not talking about some vague headstage/soundstage. If you close your eyes, you are actually in that room even 3 years later.
Of course you could also learn to do the measurements yourself.