My SakPak arrived today.
Notes: Bottom gusset is 4.5″ long. Straps attach directly at the center of it, so pack can be worn either way (i.e. logo out or logo in). How high the pack rides on your back is determined by how much you cinch the top, which will cinch itself under enough weight, provided it has the volume to do so. You could also shorten the straps by untying & retying them from the bottom attachment grommets.
The grommets are “snapped” together from the front & back of the pack fabrics, meaning the said 4.5″ gusset gets smaller on the outside edges where they meet. I crammed a water bottle down the side when a big synthetic jacket was in and this grommet popped open. I did stress it quite hard (and would not recommend following suit!) but the fabric is holding just fine so far w/o the grommet. It would be easily repairable if it becomes a problem.
I loaded it with a bit over 9 pounds of gear and water, about the upper limit for my daypack weights including camera equipment. The dual straps provided enough comfort, and when properly packed felt just fine on my back. It works best by keeping the back pannel flat, and not round, against your back. 2 SmartWater bottles made great virtual stays.
It will replace my heavy camera sling pack for daypack use and as a summit pack on base-camp trips. I also intend to use it on future travels as a general tote pack.
For $9 shipped, I really like it!