My enquiry was largely academic, but there's no reason why a ventureshield type application would distort optics or noticeably discolour.
Likewise, why would it come off? In motorsport, visor 'tear offs' are deliberately designed for easy removal, but screen protection is designed to stay on for the life of the screen. Stickers are routinely attached to aircraft fuselages without issues.
Granted some aircraft - mainly business jets - have complex coatings that require extreme caution, even when cleaning.