Well, I tried the new pack on a simple overnight a few weekends ago. Loaded it up, nice and heavy since we were heading only a few miles up an easy trail, and it seemed to ride well on both hips and shoulders. No issues with the straps, so I don't think I need to replace them/swap them out. Heading on a 5-day trip over July 4th weekend, so we'll try it out again as a final prep for August.
