I've got one of the Scramblers, and it seems to work as a summit pack and for light duty pretty well. It won't take much abrasion without taking damage. The framesheet in it works decently, but it isn't made for heavier loads, by any means. The straps are thin and the waist strap is....not suitable for providing any support. I like mine, and it works well for what I use it for (I use it to go to the grocery store on my bike for small trips periodically and things like that). Other folks on here have voiced their opinions too. There's also a Super Scrambler, which is sturdier, but I've never seen one, and there was a thread awhile back conjecturing on what it was really like in practice. It might be more down your alley though.