I love this backpack for getting around. It's so roomy because of its boxy shape and I find it really great for packing for a few days away. My main problem is the laptop compartment. It is right against your back, which is great for security. But I find there isn't too much padding. This means the bottom of my laptop constantly digs into my lower back. This is fine for a little while, but I walk 2 miles to uni a day with this and it does hurt my back a lot. My solution to this has been to put the seat cushion that comes with the bag into the laptop compartment and this helps a little bit.
My other gripe is the straps. They're more padded than the original Kankan, yes, but they are by no means well padded.
They might convince you otherwise, but this is first and foremost a fashion bag. It isn't ideal as a laptop bag. I think this bag is great if you don't carry anything too heavy in it. But in my experience I don't find it pleasant for carrying my laptop in. Which is a real shame because this is an expensive bag.