I guess if your only carrying those few bits Ferj, then you should be ok with the backpacks you have chose and one of those inserts from flea bay. I have found that it's a good idea to have an insert with a handle stitched on the side of it then it's easy to grab hold of and drag out of the top of your sack. I tried an insert that was a top loader but it was a pain trying to get anything out of it when it was inside the rucksack. Mine is a rectangular insert with a handle. I like to try and keep my gear separated from anything that's going to leak all over the gear.
My biggest problem is the gear I carry on the hills plus the camera gear it amounts to a lot of kit.
As for commercial camera backpacks, I have 4 (a couple I was given) and none of them I would call the ideal soloution. Which is why I use a 40/5 mountain backpack + insert.
Note to all camera bag manufacturers! There are a lot of Landscape togs that climb and walk in the wilds. It's about time you thought about a bag that works! We don't need a 35 litre bag with 14 compartments to carry 2 bodies, 8 lenses and 10 filters. Those are ten a penny.
For me that would perfect is a proper rucksack, one half of the sac a camera bag (top half) and the bottom half for my kit. With proper shoulder straps and waste belt and if I'm really pushing my luck, make it extendable from say 40 to 45 or 50ltr. Straps for tripods, rope, or poles etc etc, how hard can it be?
I see people discuss this quest for a sac similar to the described time after time and the manufacturers still haven't got the message yet.
I did see a dirt cheap and very badly made backpack but it would have been perfect even the bottom compartment completely unzipped and was removable to half the size of it so it could be use a just a camera back pack.
Oops this has appeared to have turned into a rant sorry about that Ferj, I really only meant to say a backpack and insert is your best option