I moved into my Janet Leather standard size binder on 29 January so I have been in it for exactly 4 months now.This was the first binder made from JL.
It has been used daily as a planner and a wallet so is used and handles extensively.
It is developing really nice patina on the back, clasp and interior. Not on the front because the front has really extensive range marks (I wanted them on the front because I really liked them!), but that will come with time.
This leather is really nice. It marks and develops patina and gets more beautiful the longer you use it. The process is not the same as the undyed leather because it is a different kind of leather, but both of them show marks, scuffs and get darker and shinier with use.