I brought both bikes to AZ with the expectation of bringing both to Desert Camp. I rode the Sat'R Day around Tucson testing its mettle on the hills. Alas, it was a dismal failure. 4-5 mph slower on the climbs and sent me anaerobic in no time. Between that and the seat/butt issues, I called Bike Friday to let them know I'll be returning it to them for keeps. :((
I'm keenly disappointed as the packability and agility of the bike is awesome. Just some design flaws that make it not a keeper. I'm hopeful they'll keep working on the prototype.