After lots of research, I've decided to buy myself a Thorn Sherpa for my tour around Alaska this summer. The only thing I haven't fully decided on is tyres.
Sometimes, I will be riding on some fairly rough, gravel roads so I have been considering Schwalbe Marathon XR 2.0". Are they what you'd choose? Or are they too heavy/inflexible/whatever for what I want?
Any advice would be greatly appreciated.