backpack suggestions

[HDNitehawk]

I have watched the f-stop's video, as far as the support system it doesn't seem much different than the Trekker 400AW.
As far as carrying gear they all do the job.
The difference is how it feels on your back, and the problem is that it would cost $350 ++ to find out.
I wonder how well it work just buying the internal units from f-stop and then use it with a quality backpack made for backcountry packing

[neuroanatomist]

I wonder how well it work just buying the internal units from f-stop and then use it with a quality backpack made for backcountry packing

My wife any I used to go on week-long backcountry treks in Northern CA, but since I got back into photography only after having kids, we really haven't done any backpacking where I needed to carry camera gear. But if I were to do that again, I'd definintely pack the camera gear inside a good internal frame pack (Osprey, etc.), rather than using a dedicated camera backpack. I'd likely pack the camera gear in neoprene pouches like those from LensCoat for protection (I have a couple of LensCoat BodyBag Pros, one for the body only which actually holds the 1D X with the 40/2.8 mounted, and another for body with standard lens that works for the 1D X + 24-70 II), and put them in with the clothes. That would allow good protection and better flexibility for load distribution.