Have any of you done any touring(multiple days of 30+mi/day) on fat tires? I'm a big fan of fat tires because I mountain bike, but don't want to be pushing extra day after day on a tour if I decide to go with too big of tires for the type of riding I'm doing. I can't find anything on fat tire touring bikes, so I figured people just don't because of extra rolling resistance. Is that correct?