Skiing is my life, thats pretty much it. PSIA Level 2 Alpine instructor, working on Park/Pipe accreditaion, Working to be a Snowboard instructor as well. Love big mountain and backcountry hits. Park is ok, but not what I go to the mountains for.
I can't begin to describe to you how awesome it is to have the compartments separated with their own zippered enclosures. Keeps me nice and organized and separates the dirty drawls from the fresh gear. This thin is plenty big for a week long trip and won't leave you wishing for more. The zippers seem pretty robust and the handle telescopes out pretty far for ease of transport.
The "plastic" is bulletproof. I've had this box for 3 years and there are zero cracks or seams or blowouts. Definitely some of the finer material I've had in a roof box. As a bonus, the locks are awesome.
I have this box on my VW passat wagon and it does NOT cover the rear hatch seam. Its even forward of the "RC CAR" antenna on the vw. The attach points do have some flexibility (Maybe 5 inches in either direction?) so you can move them as needed. Also, I'd guess that your roof rack has some for/aft movement as well. I don't believe it would hang over your windshield.
I can't even describe how awesome this coat is. There is ZERO insulation, its a pure shell that is super waterproof and light. I was actually concerned when I got it that it was TOO light, but once I wore it, I was sold. The whole set up is like wearing a suit of armor in the PNW rain/snow. It sheds moisture like a garbage bag, but breathes like mesh. This can be a deep winter coat with layers underneath, or a spring/warm weather coat with a t-shirt underneath and the vents open. Pair it with the primed pants and you've got a heckofa suit.