

I don’t actually know if anything you try in the test state saves to the flash drive, sorry! But I know that if you try it, then shut down the PC and boot it with the drive removed, it will return to your copy of Windows like nothing happened since the last time you were on Windows.
I don’t understand what you mean by “Mint version” and “distro version”; they’re the same thing, I think.
Maybe they’re interested in finding exactly what the public’s critical breaking point is. Without gauging exactly what the demand (for distraction-free, private use) is, they cannot optimize their sales. They sure lost big with France, but we’ll see who else follows suit…