Any biographical info on M R Fairbairn? Was he actually part of the Royal Scots? I would suggest the liner was reused, but on second thought, it would seem to be a part that wears as much or more than the rest of the kilt on the body.

I agree with you it is odd. "Military" but fringed; Hanger loops; Sporran Loops... Was this possibly modified at some point adding the incongruous features?
I thought the "ancient", "muted" and the rest were more 1950s inventions of mills. Did so-called "ancient" colors come in much earlier?