Post author her!
Super interesting! I heard rumors about it!
Do you know if that was just a matter of implementation or a matter of data structure usage? In my mind, the RCS approach makes more sense for common operations such as checking out the most recent version, particularly if history is deep. (Writing would still be same, given the most recent version is in top in RCS (and not just append only).
Would love to get more flavor on the his, and happy to amend the post with more information!