I took a gamble & ordered one of these today. I like the idea, and want to see if it interferes with my assault pack. Looking at the video & pics, it doesnt seem like it will-but I am concerned with potential chafing where the straps come in contact with my back & shoulders when I have a pack on.
My vision with this is that I can carry essentials in the Ribz pack itself, with clothing/comfort items, and water, in my backpack. I like anything that is a tiered system; carried on the body, then pockets, then ditch gear, then a pack. This certainly fits my "ditch gear", as it is a layer to my system. And, on these cooler new england days, the heat retention may be an added bonus