Actually, Jason Bloom didn't have a preference for "in" or "out" and encouraged experimentation. In fact, he suggested the "out" position in some kinds of setups, particularly home theater.
I have had my MRT ribbons to the outside on Apogee Stages and currently Analysis Epsilon, and have come to prefer it that way. It seems to reduce the imaging hotspotting of the MRT, creates a larger and slightly darker (in the good sense) presentation. It is worth trying and is happily completely reversible. I found that the visual impact took a while to get used to and the visual was more troublesome for a while than the sound, but I got used to it.
I have had my MRT ribbons to the outside on Apogee Stages and currently Analysis Epsilon, and have come to prefer it that way. It seems to reduce the imaging hotspotting of the MRT, creates a larger and slightly darker (in the good sense) presentation. It is worth trying and is happily completely reversible. I found that the visual impact took a while to get used to and the visual was more troublesome for a while than the sound, but I got used to it.