Review for Customized Large Zero Messenger
I'm coming from a six year old custom Timbuk2 Laptop Messenger, size medium.
It's fully awesome that the components in this bag are modular. The laptop sleeve in the timbuk2 is sewn in so when I wasn't carrying my laptop, which was decent amount of time, I was wasting about 25% of the bag's capacity. Which is a bummer.
The bag is fairly comfortable, though it'd be nice if the shoulder strap was even more adjustable. I'm short-to-average height, about 5'7", and fully adjusted the bag still hangs lower than I'd like. But that's personal preference and your mileage may vary. The timbuk2 bag was ridiculously adjustable, and much easier to make adjustments, though it'd leave you with this big stupid loop of extra strap. In that regard, this bag is better because it handles the excess strap intelligently (which is why the adjustability is limited).
I wouldn't say this bag is heavy -- it's about the same weight, if not lighter, than my old bag and it has greater capacity. Certainly if I fill it up with dense materials it will be heavy, but that's a function of the space the bag provides, not of the bag itself.
Overall, very happy with my zero messenger.