Studio recordings/demos for "Commando Girls" and "Gimme A Break"?

I've heard that "Commando Girls" and "Gimme A Break" were recorded for the debut EP in 1979/1980, but is there any actual proof or evidence of this? I've also heard that "Animals" might've been recorded too, but this seems questionable. "Lap of Luxury/Working Man" was finally made available a few months ago, so if these other recordings do exist, is there a chance that we'll ever get to hear them?