^ x2 if your looking for dry pick-up bed storage. You can then make a plywood roll-out drawer or have a carpenter buddy help you. The drawer helps gain access with or without opening the cover. Good when working on rainy days especially.
There's another drawback to the vinyl tonneau covers, the roll up ones... on a very windy day, on the highway, they can get ripped right off the truck. Mine did this twice. It survived the ordeal intact, and the first time I put it all back on there. The second time it happened, I said "screw this" and left it off. The rigid ones are a lot better.
I took all the toolboxes off of both trucks and built a trailer that holds my stuff. Lots easier to just drop the trailer and still have the trucks, with empty box, for other uses.
I really like the arrangement a lot better. It's another option, anyway.
The Truxedo tonneau cover is pretty good. Going through the second Minneapolis winter with mine, and no complaints at all. The Deuce is more money, but you can open the front section without rolling up the whole thing.
TreeStuff will be offering the whole Bedslide line very soon. I think Bedslide with some locking watertight tool boxes or large job chests secured to the bed from the inside is a sweet setup. Also the 2000lb extended capacity means you can load wood on it while its extended and just keep sliding it in as you load it, all without sacrificing much bed height.