Anybody used a 26" Maxxis Holy Roller as a touring tire? Looking for a substitute for a Surly Extraterrestrial, they seem a bit random QC wise. Of the 4 tires were using on our two bikes, 3 look like new after 2500km, and one is nearly worn out, and seems to be made with a different rubber compound. I really like the fat tire feeling,and the off road grip of the ET but not having a tire wear out so quickly.