This is super cool and I want one.
However, to stir the pot for a second... How is this different/better than one of the handful of other options in a similar size range such as the MLD Prophet, ULA CDT, or SMD Swift to name a few of the popular ones around here? For example the Prophet is more or less the same weight at 2900ci, and depending on what was measured as your 2500ci(main compartment vs, sum of all pockets etc.) it might be slightly bigger too. I'm only comparing it to this cuben pack without it's optional frame here.
I guess I'm wondering how much weight is actually saved here by using cuben. It seems to me that cuben allows crazy stuff like 3-4oz sul/xul packs. It is also a great material for tarps and shelters where there is really very little actual structure, seams, etc to add weight. A material that is whatever percent lighter than another actually correlates pretty well to a lighter shelter. However, for packs, once you add a hipbelt, beefier shoulder strap padding, compression straps, additional pockets etc. the relationship between a given material's weight might be a little less relevant.
As far as the design features of this particular pack, I really appreciate the removable frame stays and the single do-it-all idea that this can be your frameless 3 season pack, as well as winter, or heavy water load desert pack. And there is nothing better than having something custom made to your specific taste/requirements. I'm not at all trying to knock that. Besides, everyone knows that cuben is sexy.
I'm done stirring...
edit...I meant smd swift, not starlight