And since me the backpack totally convinced. He wears surprisingly pleasant, even with attached tripod because it is well fixed and does not wobble back and forth. How long the bag carrying the tripod is survived hard to say. I have a precautionary measure a piece of an old plastic sheet put into it below. This should extend the life significantly. The shoulder straps are wide and well padded that I liked. The back ventilation is obviously not comparable to that of a trekking backpack, but that's not a real drawback for me.
Processing acts for me solid, never sloppy or cheap, the zippers work sturdy and manoeuvrable. The design I find quite succeeded. the backpack is compact and slim, despite its size. The carrying handle on the top cover is practical and convenient, if you want to stow the backpack somewhere, eg behind the car backseat. The practical rain cover is also useful if you want to settle in the wet grass, or wet leaves the backpack times.
By chance, I have found a very handy feature. The compartment behind the back padding is predestined to it safely stow a 10-inch tablet PC, for those who used such a thing for camera control or for Live View.
The only shortcoming, the upper tray is not really closed to the camera compartment. Smaller portions, the top lots are simply placed in the tray, so go easy on the journey, or be recovered between the camera and lenses. But that was my whole worth no penalty.
All in all, a good product, absolutely top for the price.