My only issue with using a saddler, or doing it myself given I am an adequate functional cobbler, is a lack of dimensions for the straps. The end caps as I have the original I can re fabricate with relative ease. They should at least be less fiddly than the No32 scope covers I’ve made.
Ideally for each strap some kind person would supply: length, width and approximate depth of leather, along with photos of the straps and buckles (although photos I can likely scavenge from google).