FileVault unlock startup screen

I don't want anybody turning on my Mac seeing my name and user account picture (all user account configured on the computer, actually!) just because it defaults to choosing a user to unlock the drive.

  • How can I get two simple username/password text fields instead of the "personal" login screen? This is possible for a "normal" login screen...

There is no way currently to get login / password blanks at the FileVault 2 preboot login screen.