I’ve seen several over the years, as well as commercial buildings with metal studs, structural steel and metal siding and roofs. I’ve also seen some similar construction that is 30 or 40 years old, and we tore one down. I think the metal and masonry is far superior to the wood, but like anything, you have to install it right and there are some tricks.
Metal buildings are great in many ways, but they're also harder to insulate than conventional wood framing.
Typically, the metal construction has rubber or vinyl insulator strips or sealant strips between the panels and the joints like one of the cheap aluminum camper caps. They are a sieve at best. And the insulation is typically fiberglass against the metal with a continuous plastic sheet on the inside. It does not provide consistent insulation. The better solution after all of the framing is done and the siding is on and all the plumbing and electrical is installed, is to do the spray on expanding foam insulation, like crazy foam in the can, except there are professional insulators who do it with an industrial machine. It truly provides an airtight seal, but it’s very hard to go back and change things after you do it.
I know they're like crazy loud in a rain storm...
Ditto. & if Uncle Gump thinks it’s noisy with his vintage ears, you have to know it’s a roaring racket! The spray on foam can handle this as well. There is a catch 22 though: you really like to have an air space between the living space and the roof exposed to the weather, so the heated air from the sun can escape. That means putting on a double roof which alters the economics of the metal structure.
And perhaps most important, is you have to lay down a combination mastic/rubber/vinyl barrier between the metal framing and structure and the concrete slab. Don’t trust/believe the metal warranty claim. It decreases with time and it’s typically worthless when you actually need it. Think of the insulating putty & vinyl that goes on the straps around a gas tank. If the metal touches the concrete and there’s condensate, the bottom of everything rusts out in a fairly short time, like 15 or 20 years.
The other thing you might consider along the same lines, is to put on cathodic protection. Basically you have a sacrificial magnesium/aluminum cathode in the moist dirt attached to the metal structure. The cathode decays instead of the steel structure. or you can use one of the direct current rectifier units (make sure you wire it correctly!!). It’s not a bad idea to coat the bottom foot of all the metal touching the concrete with coal tar epoxy or something like that, including the bottom surface that touches the concrete. On metal buildings “rust“ is the equivalent of termites and rot...
Hope it helps.