I think that you are confusing the action post used by such makers as Wim Wakker and The one made by Rock Chidley - I believe that the post used by Rock Chidley is unique. The post used by Nickolds and Wim Wakker are based on one of the posts illustrated in Wheatstone's 1844 patent. Not sure why Wheatstone's riveted action is more valued than those riveted actions made by George Case and George Jones - same principle. I doubt that Chidley's action has anymore friction issues than the various riveted actions, the lever also rotates around an axle.
Chris