Has anyone had any luck putting a bumper over the InvisibleShield screen protector? Both arrived today and I put the bumper on for kicks first and noticed how the edges are slightly sharp and might peel my IS. I've since taken off the bumper to apply the InvisibleShield successfully, no dust/bubbles. I'm letting it set overnight, but I'm a bit nervous putting the bumper over the top of the IS. If you've done it, let me know!