Liquid screen protectors... can they be removed?

[Starfyre]

I see a lot of different liquid screen protectors from Gadget Guard, Spigen, etc. like this:

http://www.gadgetguard.com/registration/black-ice-edition-plus.html

https://www.spigen.com/products/screen-protector-glas-tr-nano-liquid

Question is, does anyone know how well this stays on?

If I get the screen dirty or sticky, can I still use a wet napkin to clean?
Can I use clorox wipes too and make sure the nanoparticles still stay on the screen?
Can I use windex and make sure nanoparticles stay on the screen?

If the above is okay, is there a method to "remove" these nanoparticles so I can apply a screen protector later on without worrying about putting it on the nano particles??