This is an opinionated thread. I've always wondered. Could a mere mortal really fashion him/herself that sinister suit of armor from another realm? Sure yeah, you can say so because we do it in game, but there are a lot of things we can do in the game that would otherwise be impossible; like chug 17 potions in the blink of an eye.
Personally I don't think so. You couldn't make that at some kind of run-of-the-mill forge. Same goes with Dragon armor. Just little quirks in the game that are cool to have (until you get sick of them, like me) that wouldn't actually be able to be created by normal people.
Insert thoughts and arguments below.