Using a!urlForSite() to pass data to gridField user filter

Hello,

I am trying to make use of the new function: a!urlForSite()

It seems like a great use case for a!urlForSite() is to pass data to a site page that shows a record list, so that the user can be directed a filtered set of data. As far as I can tell, this can only be done using custom components to create filters, and cannot be used to pass data directly to ootb user filters. I usually try to avoid using custom components as filters because these cannot be saved as user filters and they don't appear in-line with the search field. Am I missing something? Or is passing data to user filters still not supported? 

Thanks!