File access control at field level rather than template

[DrQuincy]

In a template you can enable:

Prevent direct access to file assets owned by pages using this template?

And in site/assets the folder of that page has a minus prefix added so Apache tells PW to handle the file request.

I have a situation where I want the top level page to have no access control but I also have a series of files where I need access control. I.e. it's a mix. I'm just wondering if I make the files be part of a repeater, can I set access control for the repeater only since it has its own ID. Will this work?

I would guess that it does but I wanted to see if anyone has used this approach in production.