Bob, the engineering on steel is sound, you just have to calculate it.
I actually sent some of those links on to the bosses, and think I'll bring it up with them to see what they think of the idea. I think there could be potential, but would have to be examined by someone more engineeringly gifted than me. I am thinking of it as being used for the incidental office space for a lot of commercial projects we do for machine shops, warehouses, and random other manufacturing facilities that can have 10ksq ft+ of work area, then 5-10% of that have to have a wood or metal studded office area, sometimes two stories, within the metal building shell. This could be an economical solution for some of our clients who want it cheap, long-lasting, and done right, and don't give two hoots if it's pretty or not.
The hurdle I see is getting a contractor to welcome the idea of working with the stuff, and striking up some economical supply connections, as well as overcoming the initial engineering hurdle.