@greypilgrim Heh, yeah. I use GDLauncher, so far it seems to only ask once and saves that for future sessions.
Switching between accounts is easy enough in that one, so I'll see. I'm kinda on a Minecraft-break now anyway. Although the itch is slowly starting to come back, then I'll experience if this really went that smooth after all, heh.
For now I'm happy enough I managed to move that stuff.