I've never ever posted on a forum before, but I wanted to let whoever is interested know about my first experience with my packing cube backpack. I was in a race this weekend called the Glow Run (an untimed 5K run held downtown at night, kind of like a Color Run with glowsticks). The race organizers did not provide a bag check, and our car was parked more than 1/2 mile from the starting line, so I ran the 5K wearing my new packing cube backpack (the Aeronaut style), which I had brought along to carry my phone and wallet and extra gear.
Two miles into the race, my running buddy surprised me by taking off in a sprint. I ran to catch up with her just as there was a photo op, and I apparently didn't see the photographers' carpet in the dark (I don't even remember a carpet) and took a spill. I remember hitting the pavement (lacerated my palm and scraped up my knees pretty thoroughly) but apparently I also rolled, because I do remember hearing the backpack scrape the asphalt.
I realize this probably isn't the intended use, but I was really impressed that despite being scraped on the pavement in such a manner, the bag didn't show a single scratch (even though I did). I look forward to taking it on an actual travel trip, now that it's been on a personal trip. ;)