>  Keeping stylesheet filenames mirrored exactly to view filenames helps keep the scope of any given css explicit.

You shouldn't throw out Sass standards to achieve this, this file is a Sass partial and it's file should start with an underscore.

I also don't think that the most effective way of creating reusable styles for components on a page is by linking the Rails partial folder/files names to Sass partials folder/file names as they imply a link between code logic and styling which should be able to be refactored without effecting the front end. It also discourages re-use of blocks between projects where the code structure does not match.