Another road I did fully loaded on 37c tires. Gibbons Pass in Montana. I think the super wide tire craze is counterproductive when you are doing a mix of on and off road. Another one to look at is the Surly Straggler. Surly referred to it as kind of a Cross Check on steroids.
As an aside, this photo was taken while I was climbing and thus is a good example of why you should occasionally stop and look back.