I had a chance to borrow a Kawasaki KLR 650 for a day in the dirt. My friend, Greg, rode his BMW R 1250 GS. We rode on Highway 101 north about 75 miles to Potter Valley, California. The end of the paved road begins a vast network of Forrest Service Roads in the Mendicino National Forrest.
The views on the ride back down were pretty spectacular.
We rode about 150 miles of pavement and another 75 miles of dirt roads. Some well-maintained some rough. I liked the KLR, it is very tall, but comfortable. It's a little slow for long distance highway travel but on dirt roads it rocks.
I have considered heavy weight adventure bikes to be great on the highway but way too heavy and tall for anything but good dirt roads. While I haven't changed that opinion, I think I'll have to give middleweight adventure bikes another look.