Thinking outside the box a bit, the practicality for hiking of heavy denim Utilikilts made me recall that you can have any one of several variations of Buchanan tartan made up in a wide variety of fabrics including heavy denim.

https://www.spoonflower.com/en/shop/buchanan-tartan

After having the fabric made you could send it to somebody who makes canvas utility kilts.

(Utilikilts themselves, the original inventor of utility kilts, won't do tartan.)