Thor, among others, would have better data than I, but several Dahon dealers have told me that they sell VERY few of Dahon's Break-away versions, which they attribute to price and to that fact that most travelers who know about S&S BTCs go that route for the same or less money, even though the BTCs add about [edited: 5 oz. per coupler] versus the B-A approach. All the dealers I spoke with said they had never heard of the downtube clamp on a B-A bike failing, but they all had stories of loose clamps being felt by riders who stopped and tightened the clamps.