Yes! That is the main use case we use the connector for. We can essentially expand role criteria to anything that is possible through an identity search query.
Also, we use it to help consolidate long role criteria that we re-use in many roles (ie. long country lists or regions). Then if an update ever needs to be made to the list, we only need to update in the single place (mapped entitlement search query) and that will update across all roles referencing that entitlement.