How do PS Vita cases work when you need the front and back screens?

Here's how... turn on the closed captions and translate them into English for all sorts of crazy phrases - horse doctors and innards aside, you'll get the gist by watching this Sony bod twizzle the cases in different ways to access the handheld's interfaces.

At 3:55 that looked so like a Vita kebab, I was going to take a bite.