I have various Maxpedition gear and love all of it. I use the Mongo Versipack as a day bag for in the city. Especially handy when I am travelling in African cities.. keeping your bag on the side below your arm helps to minimise pickpockets and also better to get through crowds than a backpack IMO.
I was also looking at the Vulture II and it would be the perfect size for me for hiking. But I am not so sure about that compression band that comes over the top. It might be very useful for compression, but I think there is not one pocket that you can access without opening a compression strap.. So I thought that would annoy me too much on my hiking trips.. What do people who have the Vulture II think about this? Aren't you annoyed about not accessing a pocket just via a zipper?
Maybe I am just too used to conventional hiking backpacks with a top compartment with zipper..
On another note, I think I read somewhere that the Vulture II was designed to sit high on the back so one can still wear a gear belt. So more a military use than real hiking. If you hike in a mountain area you don't want too much weight that high as it doesn't really improve your balance..
In the military (Swiss) we also had our backpacks rather high on our backs, but that wasn't a problem as most of the real heavy stuff is in your gear belt (ammo, grenades, water). Your backpack is mainly for your ABC suit, rain gear, spare underwear, sleeping bag, and some emergency food. So the overall weight including your gear belt is distributed quite well. Just something to consider if you go for a military type backpack that was designed for a specific use..