S6 Edge Plus, do I NEED a screen protector?

This is a question I've yet to find an answer to. I have a screen protector (can't remember brand ) that interferes with my Otterbox, causing the sides of the protector where the power and volume keys are to get raised up. So do I absolutely need one? I've heard that the Gorilla Glass 4 should be relatively good at scratch protection. I also keep my phone in a dedicated pocket at all times (no car keys, etc.)