I'm not as concerned about scratches as I am about cracking / impact damage to the screen. I often put my tablet in a bag with lots of heavy stuff and I'd like to have something keeping pressure and impact off of the glass panel. My old galaxy tab 10.1 got cracked, which ruined the touch sensitivity, so I'm especially concerned about protecting my prime from this.
Stock 4.4 / Rooted
Stock 4.3 / Rooted