Thank you for your interest in Plexus. Plexus is a perfect cleaner and protectant for both applications. The screen on the both surfaces will benefit from Plexus.
Micrfibers cloths can be used, but I would suggest more of a cotton product. What I found best is a nice soft terry cloth. The Terry cloth seems to be a bit more absorbent. So when you are wiping the surface down after you spay Plexus on it. The terry cloth picks up the excess Plexus quicker and a bit more efficient in the wipe down process.
Again both cloths are just fine for wipe down just never use paper towels or any pulp product as a cloth for wipe down.
Thank you again and please let me know if you have any other questions.