Interesting. There are also Old Believers in the US who are Russian who are apparently in communion, or were in communion, with the Georgian Catholicos, obviously a different group altgether.
Now hasn't the Church of Georgia been collectively working to de-Russify its liturgy? It seems to me de-Nikonization would be an obvious part of that.
What I have yet, in discussions with Old Believers on OCNet, who as a group Inlike and am sympathetic towards (although I personally prefer the revised liturgy, having seen both), is wherenthe actual corruption occurred that was imported by Patriarch Nikon; for example, if it is their contention that the Greek liturgy became corrupt at some point, and if so, when. It would be really interesting to know what the more advanced Old Believer theologians say about that, if for example, they have a preferred theory on how, where, when and why the liturgy outside of Russia and apparently Georgia became corrupt (for example, was it due to the Fourth Crusade, or the Council of Foorence, or Turkokratia)?