SearchKit feature request - filter by data segment

My client has a request to be able to filter by data segments in a SK embedded in Form Builder.

My initial thought was that this would have to be done in PHP/JS and not SQL, which would have awful performance - but on further thought, I realized that data segments could be used as WHERE clauses.

If someone wants to message me on Mattermost with an estimate, I could bring it to my client.