I bought this about a month ago (as of posting) and have been using it a great deal, both in collage commutes and standard travel. The design of the backpack is great, but there are some notable issues that I think would be helpful to consider.First, and most importantly, this backpack is not fully water proof. They do state this, but it's something that I'd like to go into with some more detail. I've used it four times in the rain. The first time I used it, it was lightly raining. I was out for maybe an hour and a half and nothing in the backpack was wet, though from the outside the backpack was soaked. The second time, it was raining moderately and I did notice some leakage, but none of my electronics were damaged. After that I started using the water cover and, although it's a hassle to take in and out, there were no " leak scares".As for the design, the internal compartment is fantastic. You can customize it in really any way you'd like, but it would have been beneficial to get maybe one or two more dividers. It also wouldn't have hurt to have the top pocket-area also functional with the dividers. You can still push the main divider (between the top and main compartments) to add more space to the main compartment, but this does very little to help with sectioning of the top area.Still I would give this backpack a 5/5 if it weren't for the straps. For short periods of time, the straps are comfortable. But as the day lingers on, even when there's little inside of the backpack, you can start to feel a little weighted and need to take a break (maybe 40 mins to an hour into wearing it). Also, the straps and back are not very breathable.I don't think a backpack exists which (to me) actually feels "breathable" but this one is on the lower side of the ranking. Your back and shoulders will get very hot wearing this, especially in the heat (of course), which isn't helped by the fatigue you get after prolonged travel. But if you can spend a few minutes to take it off and rest, this backpack will do just fine.I'd say, in terms of a tack/photography bag, this is a 5/5. The breathable issue won't be a problem since you'll be taking it on and off periodically as you take photos. But for a commuting or daily bag, its a 4/5. Great for carrying stuff (as any bag) but not for a long time.