Here is a very short youtube video showing fabricated brackets for hanging the leather panniers that many of us have to a royal enfield.
https://www.youtube.com/watch?v=amU_-5aiCfAI have seen sets made of pvc with light clamps which is all readily availabe, but being an old boilermaker myself, I have been holding out for a design which I could weld up from steel. I like the simplicity of this set.
Even though I have just purchased a hard pannier set, I would still like to fab up a set of these brackets for proper mounting of my softies which I also love.
I would prefer to just buy as set from RE, even if I had to weld the brackets to the stays myself. If only they would make them available.