Most of the jeans you can buy these days over here are either not denim or so thin as to tear if snagged. Have a look at the craghoppers gear. I'm on my second pair in 5 years, and i wear them a lot. Never wore more comfortable pants tbh. More pockets than you can shake a stick at, and they have never torn. Only issue i have had is the stitching pull apart in a small area when caught on barbed wire. The material held well enough though. Only on my second pair because my waistline went up a size. Its back down now and i'm wearing the old pair again. 

Never tried "solar dry" or heard of it until now. That said, I've never been uncomfortable in denim. And I doubt any of the so called "quick drying" materials are anywhere near as abrasion resistant as denim. That matters to me when hiking through brambles; for that matter, denim is the only material (short of very expensivematerials such as kevlar) that is reccomended as a substitute for leather clothing for serious bikers.