Can You Use The Screen Inside The Packaging as a Screen Protector?

So I'm getting a new iPhone today, and I know that when you open up the box, there will be two Saran Wrap-like screens covering the front and back of the phone. I was wondering if you can use these as make-shift screen protectors.

You can't, the material won't allow the touch screen to work. Buy one from Amazon they're about £2 (in the UK)