had the invisible shield on my phone since day one, that was over a year ago. Its started peeling on the edges and has a few "impressions" in it. After using a friends phone without a screen protector it was much smoother and not nearly as sticky, a) do i really need a screen protector? b) Is the invisible shield just a marketing ploy with how scratch resistant it really is? I dont worry what i put in my pocket if my phone is in it.