Thanks! My new bag is custom made for me.
The process to have it created was exciting and frustrating. lol. The story is fairly long so will try to keep to the highlights. The process started around March 2016 with a general request for a custom bag. A couple of months later we documented in detail various dimensions and details of the bag, such as keeping the face and strap adjustment mechanism of the Écritoire. There was never a question of the material as Barenia was part of the original request.
After a few months Hermès agreed to the concept so I placed a deposit to have a model created. Many more months went by and at the end of 2016 the model arrived for my review! Some fine tuning was required which took a few weeks. Finally all was sorted and I provided my approval to have the bag made.

Let me know if anyone is interested to see the model.
It was then time to wait again. And wait. And wait. lol Was informed that they were having trouble locating enough Barenia that met their quality control standards. Like the Écritoire this bag requires a lot amount of Barenia. Finally, after more waiting, I received the message that the bag was finished and that it could be collected from the store the following day!