Categorising PDF/Word files -- use a metadata schema?

We have lots of PDF and Word assets on our site. I'd like to categorise these, e.g. 'reports', 'brochures', 'downloadable forms'.

 

This would allow event tracking in Google Analytics. That way I can track total downloads as an event, but also see what types of files are being downloaded.

 

Mark up might be : My brochure

Would you create a metadata schema (with a file category) and apply these to files?

Yes, I think that would be the easiest option.