I think jeans last about 10 feet when you're sliding down the road. There's Draggin Jeans, but I'm beyond skeptical. I'd suggest motorcycle pants that go over your jeans and zip off when you want to remove them. I used to wear an Aerostitch Roadcrafter one piece suit, and I could get in/out of it in about 10-15 seconds. Road rash is knarly beyond all expectation.
https://dragginjeans.net/