I have Learnt my Lesson carrying a 6Kg Gaming Laptop for a Year. It used to be exhausting. So i certainly do not want bulky bags to go. The Laptops (i would go for or) i have now is a Asus UL Series which is pretty light for a 13" Laptop. I wud never venture beyond a 14".
Its the Functional Seperation that makes this want to buy this bag.
It has a Laptop Hardcase that i can easilly use in Airports/stations/anywhere for Work or (even for security Checks rather than those darn trays).
A serperate Case for Laptop Accessories which is good since it protects the Laptops Body from unwanted Scratches.
A 3rd compartment/General Bag for Books,documents etc.
The Way i see it is that this is a very organised Bag suitable for movement.
But then there are cons as mentioned by Sandy and Motorheadinc.
A strap would cause a lot of load on my shoulders incase this ia bulky as mentioned by Sandy.
The Bag weighs 2Kg on its own ,Laptop +PowerBrick - 2Kg, Accessories + Books - 2.5Kg
6.5Kg seems a lot right?