Can't you simply use the current version of Reveal without a paid activation just for the headphone presets? I've been doing that though all the updated versions. I would like to know if there have been any changes to policy, but I don't think so.
I always though that the Reveal plugins consists of two components: Reveal+ and Embody. I just make sure the Embody aural map function is disabled and use the presets, which I think are free.
The reason why this is important, at least for me in my systems, is that I could never get the linear phase preset algorithms working in the legacy versions. Only the newest version allows me to use the LP filters without horrible clicking and glitching. I do think the LP filters provide superior clarity to the minimum phase filter.