Last night, after pulling myself up into a chest-high flexed arm-hang, I jokingly thought I would try an archer pull up.
I expected to move about an inch, but found I had the strength to get three quarters of the way to a full archer!
This is incredible! I'm still on RC/PE1 grinding to get 5x9r without stopping. Amazing to think what I'll be able to do when ready for the rings program!