For a follow-up on this, I ended up buying the bag and I love it. It was expensive, boxy, and everyone gives you a raised eyebrow for it's size and the rainbow of zipper pulls. But for utility, it's perfect. Each of those cons (except the cost...) is its own pro. With the size and shape, they did their engineering properly because it fits like a glove under passenger seats. High quality material makes it bulletproof. With all the pockets, you have a perfectly sized place for everything you need and they're easy to find because of the zippers. The handle fits perfectly with the LuggageWorks hook. It even solidly holds my huge water bottle. Highly recommended, if anyone is thinking about buying one.