I wear Gaerne G-Adventures. They are fantastic and waterproof, and comfortable enough that I've worn them all day at the office before with no problem. That said, for harder off-road stuff, they don't offer anywhere near the protection of an MX boot or something similar.
1986 Yamaha XT350
2005.5 KTM 950 Adventure
1991 BMW 318is turbo track car
1989 Chevrolet Caprice Classic Wagon sleeper tow car
3 Months Exploring the US on a 950