EntityAPIController's save() method does not appear to even try to save revisions?

Implemented an exportable, fieldable, revisioned entity type using Entity API. Everything seems to be working except the overview form provided via entity_ui_overview_form() did not load any of the saved entities. Looking into why, the query to load entities fails because it inner joins on the revision table, which is empty.

Looking at EntityAPIController's ->save() method there does not appear to be any attempt to save a revision. Is this an oversight? Patches welcome?

Thank you!