That's been me for a few years. After wearing raw indigo jeans for years, I was wanting a pair of black on black jeans and my favorite denim brand was out of stock, so I bought some Levi's 513 with elastane in them to tide me over. Well, they fit me perfectly and that little bit of stretch made a huge difference in mobility/comfort and I haven't really gone back to my raw. I just bought some more jeans that are designed for rock climbing, with even more stretch in them and a water repellent finish that'll be nice in the rain. :x
Denim is getting new tech that I like. Still rock my Iron Heart flannels and White's boots every day, though.