[keycloak-user] To LDAP or NOT?

We are building a new application with RBAC Security Model, we always attempt to use as much COTs functionality of our technology stack as possible. We are working with 1.7 version of KEYCLOAK for SSO (Thank you for this product by the way) We are at a decision point of where to persist our users, roles and permissions. We considered LDAP, but then with the introduction of composite roles into KEYCLOAK there was consolidation could we support users and roles directly in KEYCLOAK and permissions in our datastore. My question to the group what is the best practice? Is there value in having the additional LDAP user repository? Most places my experience is there is both LDAP or AD and SSO I wanted to keep the email fairly short, but if you have additional questions please feel free. Thank You!