Yes, you should expect increased wearing on the Apple Pencil nib when using GhostPaper. All paper-like screen protectors, including ours, are designed to increase friction to mimic the feel of real paper. Just like how a pencil rubs off lead on paper, the Apple Pencil nib will wear out faster due to this increased friction. Fortunately, Apple sells pencil nib replacements, so you can easily replace them when needed.