I decided yesterday afternoon to download the test server install. About 8 hours later, it was still creeping, so I decided to do it at the start of the day, had to give my computer some rest when I was sleeping.
So today I wanted to play the US and EU servers, and find that even though I seem to still have those installs fully in my files, the launcher is insisting on FULLY downloading them again!
So unless there was some massive patch the last couple days, the only way I can play the test server is to fully download both other servers as well???