In reply to Little Brew:
Depends.
I used to be very precious about the DSLR. but since it's got older and chalky and battered, I now just put it on to of the climbing kit in the rucksack, maybe in a fleecy hat for a bit of protection. A new camera has made me bring out a toploading zoom bag again though!
If I'm out to shoot landscapes, I'll usually have a dedicated rucksack. I used to have a LowePro Compurover thing, which was rubbish: not enough room for all the kit, hardly any room for other kit(duvet and flask!), and stupid opening that meant if you forget to close it you throw all your gear out when you put the thing on! Nowadays I have a LowePro trekker bag, much easier to find stuff, lays flat, easier to work out of, but still little room for non-camera kit.
http://www.photocrati.com/lowepro-nature-trekker-aw-ii-review-round-up/
I also use an old one of these:
http://www.cambags.com/bag-type/cases-menu/lowepro-cases/item/260-lowepro-o... for more compact travel, and occasionally use it out.