Yes, I've heard 'Out of Your Head' demos. So far, I feel that Redscape gives a better, even more realistic result with my particular setup -- also, there's an EQ preset in Redscape for my HD-800.
You're comparing a lossy file with no headphone correction to a real time rendering with the specific eq for the hd800. As far as I can tell Redscape is still modeled where OOYH is measured. Not taking anything away from Redscape, I use the Mobius daily and it sounds really fantastic, but even with the head tracking and the head variables it doesnt come close to the size and naturalness of the measured RIR. Just saying, if you're into this stuff, try running the OOYH program with an EQ as opposed to the recorded demo mp3s. And in addition you've got alot of rooms to choose from as opposed to the single hrtf of Redscape.