Just search peragon and you'll get a few hits. Here's a picture of mine in this other thread:
I have had 2 ARE LSII tonneau covers and have third one on order in ivory pearl to match the Laramie which I also have on order. I have been pleased with the fit and finish. They look like they are made for the truck , which they are.
5thgenrams.com
I love mine. I really wanted a hard aluminum lockable paint matched cover that I could completely remove in a half a minute by myself, and folded up to nothing when needed. Nothing else but the Peragon one fit those higher requirements. Even paint matched it came in about half the time Peragon estimated.
The panels are much thicker than I thought they would be - its very solid. Everyone that looks at it has to rap knuckles on the panels and remark how thick and solid it is.
Their sales model might also have some affect on how many folks opt for them since its all factory direct. Installation is not all that hard but it is more involved than plopping a tri-fold on which takes about 3 minutes. The Peragon takes an hour or so unless you are really slow like me. Mine has the SS clamps and hardware and I fiddled around on a sunny afternoon putting mine on and enjoying the process.
Those that have them seem to like them a lot. Those that don't have them find something negative about that they didn't like the way they matched their needs. I might have a hard fiberglass paint-matched cover if I didn't have the Peragon. I doubt I would have a tri-fold since I wanted paint matched but the Lomax seems to be the nicest of the tri-folds.