Owner contribution
What works
Versatile bag
Room for improvement
None that i can think of

Our ever-popular Mini Trekker — now with an All Weather Cover™ —is lightweight, compact and holds a surprising amount of gear. Includes an integrated quick-release tripod holder, attachment loops for optional SlipLock™ accessories, compression straps and lots of pockets — including a large front pocket with a weather flap and a quick-access front pocket. The ergonomic harness features wide, padded shoulder straps and a sternum strap.
SLR with attached 80–200mm f/2.8 lens (most makes), additional body, 4–6 more lenses
Versatile bag
None that i can think of
This is one bag that can surprise you. My main bag when I travel with my DSLR. It looks small but can fit lots of stuff. One D700 with few lenses, speedlight and a X100. The front compartment usually I fill it with some changing clothes or travelling documents.
Small bag but can fit lots of stuff.
None
It's my workhorse bag, I use it most of the time for my aviation trips. The config here is not my usual one, it's more to show how much one can put into it - however, I actually used it like that twice when going abroad with the plane :) The backpack is absolutely brilliant - apart from what you could expect as Lowepro standard, you get a very strong zipper that firmly closes the top even if some items are sticking a bit out of the "usual" depth (I miss that feature in the Nature Trekker). The front pocket is very deep, once I went to the Berlin air show with only the Minitrekker and all of my personal stuff (clothes, toothbrush etc :)) packed there. And, yes, the plane... while "regular size" backpacks like Nature Trekker are made to fulfil the norms for the carry-on luggage, the reality is sometimes less optimistic.. and Mini Trekker is the safe bet.
Everything: quality, flexibility, capacity, large front pocket, AW cover, smart tripod holder, solid zipper
Can't think of any. This one is just perfect.
Great bag, lots of room yet doesn't look it. I had the mini trekker 100, but was too small to fit anything but d50 and 18-70mm lens. Got domke f-2, great bag, tough to fit all my gear though, still a great shoulder bag if i am not carrying all my gear. Then got this, i am happy.
Weatherproof, huge compared to how it looks
heavy even when empty