Normally I throw a screen protector on almost all my devices, both for piece of mind, as well as to prevent damage from use. For a few reasons (size and use of Apple Pencil primarily) I've decided to forgo this with the iPad Pro. With that in mind, I'm curious for those that have really put the screen through its paces so far, have you noticed any issues with durability? The tip of the Pencil seems to be made of somewhat hard plastic and require fairly firm pressure to register full intensity while drawing - I'm curious if with increased use, there has been any issue with the screen becoming scratched / marred. Mine looks good so far, but I also haven't had a chance to really draw or sketch much on it.