I bet the people at Smyth must cringe at the though of this.
The odds of the recorded output of the Realiser working at all with any given listener is probably pretty bad. Not only are you using a calibration from someone else's ears, you are also factoring the original listener's headphone/amp combination and the additional interaction of the headphones with their ears. So now you have three completely unique parameters which have to be reasonable close to probably even sound decent, let alone anywhere near what it would sound like after doing a proper personal measurement.
Of course it might work, if you happen to have similar ears and the same headphones as the original listener, but what are the odds of that? Maybe if the recording is made without an HPEQ, and the listeners use IEM's, then at least the headphone/ear interaction would not be a factor.
Without actually having ever heard a Realiser, I can't comment on how "bad" someone elses PRIR and HPEQ might sound though. I totally understand wanting to at least hear the "out of head" effect even if it isn't optimal. I would love to experience that too knowing that it's not even going to be close to the "real thing." I'm sure that's the reason why Smyth doesn't have any online "demos" that you can listen to or download. It may actually steer people away from buying a Realiser if they listen and don't like the "bad" sound.
When I get mine, I will try to figure out how to record the headphone output of the Realiser. Worst case, I could plug the 2 channel line out into my computer and record it analog and then A/D in the computer. Or maybe I will have someone else do a PRIR, record the output, and then I can listen to it to see if it works at all.
I'll send an update once I actually have my Realiser...
-Darin