hello bear-Kodiak,
If I am not mistaken or not remembering correctly, I believe that AK customized his wiss scissors himself by adding a thick upholstery needle to the scissors.
I believe that you may locate the wiss scissors at any knitting or fabric shop such as Joanne's. I never saw those scissors available in any of the flyshops I have patronized. However you might look through THE FLYSHOP's (Calif.) and FEATHERCRAFT's catalogs to see if they carry them. Good luck in your search.