I got a pair of filson single tin pants for beating brush when they were 50% off earlier this year. They're heavy and stiffer than what I'm used to, but that's the tradeoff for durability. They're also bomb proof and waterproof, though ironically I never needed them in the wet this year, so didn't test that. They have a great reputation with loggers, which says a lot for handling brush.
Been wearing Filson single and double tin chaps for pheasant hunting for decades.
I wouldn't call them waterproof, but they do turn stickers away. Over my regular Riggs utility jeans or over my hip boots when hunting marsh ponds.
