I brought this bag because it seemed so much different from every other boring standard rucksack that is out there.
The build quality of this bag is excellent and the well thought out pockets gives great organisation for all my gadgets, files lunch etc. Something that was lacking in previous bags I have had. It's amazing how much of a difference it makes not having to dig around in your bag for things you need!
The laptop compartment is well padded and secure yet it gives me easy access for airport security etc.
I am also a big fan of the way you don't have to use this as a backpack when you don't need to. The backpack straps hideaway neatly and you just clip the shoulder strap and the bag is now a messenger.
The only slight con I can think of is that the bag is quite expensive but as I intend to keep this for awhile. I hope it's a good investment.
In conclusion. Great product, thoughtful design, a little pricey. But overall very happy