I bought it about a year ago as my first bag and have loved it ever since. It safely holds all my gear and is very easy to carry. as a student photojournalist working for my school's paper, i often have to walk around campus and look for photos or go to assignments. this bag is perfect for all of that.
Some were complaining that the bag didnt work when they tried to go hiking with it, but i think thats because it wasnt really made for hiking. i think it was made as something you could take on assignment and not have to use two bags for camera and laptop. I have teken thins bag on cross-country trips and it never once gave me problems (it fits great in overhead bins). i've even snowboarded with it on my back.
Ive also read that people dont like not being able to access their camera while they wear it, but thats becasue backpacks are made to carry things, duh. If you want access, get a shoulder sling bag.
one thing i did find, however, was that as my gear collection grew, the space inside the bag ran out quick. it is almost packed to capacity now with a 1D, 20D, 70-200 2.8, 16-35 2.8, 16mm 2.8 fisheye, NP-E3 battery, Magic Arm, Superclamp and camera platform, 550EX, and two Pocketwizards. the only thing i think i would have room for would be another battery. When i upgrade ill definitely go for the Computrekker Plus.
But even with all that stuff (about 30 lbs.), it still holds strong and ive never had a strap rip, zipper bust, or buckle break. Hell, i even ran about a mile with it on my back a couple nights ago without any discomfort.