In Jan next year I am (hopefully, if war doesn't break out!) off to S Korea for about 7 weeks to work. I will be in a position whereby I can have my camera with me all the time. I intend to take my 7d mk2, 70-200, and a couple of other lenses as well as the usual other stuff. I want to take a camera rucksack with me as I will have my camera with me everyday. I also want to take this bag on the plane as handluggage. I am therefore looking for a rucksack that has plenty of room for the camera and lenses but also has room in it for a book, headphones, perhaps another top, gloves (it will be about -10 in Korea apparently) as well as a 15" laptop. I am seriously struggling to find something suitable. Any suggestions?