When I bought my Maverick they transferred my organ donor plates, my buddy bought a Maverick a week later from the same dealer, they didn't transfer his passenger plates.
There is a little ingress in major rain when sitting in the driveway, in my experience no hard cover is waterproof. I would say it's in line with other hard covers
Take a look at the Leer it is a quad fold so you still have rear visibility it has prop rods so it doesn't lean against the cab and possibly scratch the paint. Very happy with mine.
I'm very happy with my Leer hard cover it is a quad fold so you can still see out the back window and it doesn't lean against the back of the cab when open.