Bertrand recommended this to me and Iï¿½m so stoked. It held tough Near the bottom bracket on a ride from Portland up and over Mt. hood to Hood River and back with my pal Tommy. What a great day helped out by the extra water capacity!
I've yet to use this on a multi-day trip, but on rough, 50+ mile dirt rides this tool has successfully held an extra bottle on the fork without slipping. I'd bet it will work strapped to the bike in other places as well, although I've not tested that