Regardless of whether your phone’s screen is made of Gorilla Glass or not, you will eventually notice scratches on it. For a few dollars, you would be foolish not to apply a protector. Acase provides a well priced pack of screen protectors that are guaranteed to protect your phone’s screen.
Note: Tonight, I managed to drop my Nexus 4 two times. Each time, it fell from waist level onto a hard floor. If I had decided against a screen protector, my Nexus 4 would have several nice gouges in the screen. This $7 pack of screen protectors saved my Nexus 4.
Link: Acase Screen Protectors For The Google Nexus 4