Never done this but sounds neat. Please post pictures of what it looks like after if you do!

I don't have great hope, however. On conventional formwork if I write on the form face it'll show up in the concrete. In fact, my guys get a little artistic when they know a formed surface is going to be covered (boys will be boys). So for your solution to work the coating would need to be thick enough to overcome any indents / scratches as well as be applied damn near uniform. It also needs to be durable so as not to pit during the 20 pour service life. You're asking a lot here for something you presumably want to do quite cheaply.

My preference is almost always a sacrificial layer of sorts to skin forms that have already been well loved.

CWB (W47.1) Div 1 Fabricator
Temporary Works Design
https://www.enable-inc.com/

There are controlled permeability formwork liners that do a nice job, though not quite what you are looking for. I have worked with https://www.maxfrank.com/uk-en/products/formwork-technologies/09-cpf-liner-zemdrain/ but there are alternatives.

you may be interested in our formwork gears from here:
https://www.scafeast.com/formwork/

I think a coating can only improve the appearance. It's a matter of researching the coatings to find the most durable one.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik