Let me be careful how I word this:
I think Chris Zimmer is a genius and a gentleman. When it came to my pack, I got exactly what I asked for. I had him make me a custom hip pack for cycling and everyday use that would hold bike tools, flat kit, first aid, and a light raincoat. I wanted it super-durable since I ripped through several hip packs in a row.
Sadly, I don't think I know what I want quite as well as mass-marketing seems to know what I want. When I ultimately received my hip pack, I was initially impressed and pleased. However, a couple of things happened that I wasn't pleased with, NOT ONE OF WHICH is the fault of Zimmerbuilt or Chris Zimmer. He is the messenger to my request, the problems are MY fault:
1. The hip pack wasn't comfortable because I skipped padding it. Because of the placement of the inside pockets, I didn't expect asymmetrical bulging but that's what I got.
2. The material (Dyneema) was very firm and didn't break in at all through use or washings, so the pack is stiff. Since the pack use is kind of like a rucksack with heavy items, the stiff material arranges itself to look bulky and weird. When I'm cycling around my college campus, I look like a dork. (See Below)
3. The material got dirty once. That dirt has survived three washings unscathed, and it's regular mud. I think this might be a Dyneema-specific problem. Makes it look terrible, really.
Final verdict: I stopped using it, but I won't sell it since it was an interesting foray into custom packs and I rather like that I tried to design something. The lesson here? Do your research into the SPECIFIC materials for every component of your pack, or ask Chris to explain how it feels to the touch, how it looks after a season of use, how the seams look, how it moves when packed. I didn't ask, and I got something I didn't expect.
(Below) I ended up getting a Chrome Shank hip pack. Waterproof Tarpaulin-lined cordura feels as strong as the Dyneema and isn't losing threads like my custom pack is. Second, it's very fashionable. Plain black with a bold logo patch and a nice zipper that works very well with my personal style. Minimalistic and definitely not 80's-looking.