Put these on my Ritchey Outback 650b style for a trip to Florida to help with the occasional sandy gravel. Brought my 29" "more-roadworthy" gravel wheels with me to swap out and never needed them. Put ~200 miles on the tires during the trip and found I could keep up with roadies on N/S rides along the gulf (and into the wind). These things are fast. I've yet to test them on chunky gravel but on hardpack and pavement, they rip. I'm all Schwalbe these days across 12 bikes unless there's a unique situation (20" mini velo or 26" resto mod) where they don't make the exact tire type I'd like.
Very low rolling restante on the road and good grip on hard packed gravel
