Once Unleashed AP gets cloud managed, and I think it would be a one-time process for customer (they need to then pay for the cloud subscription from then onwards), the customer can only manage the AP using the cloud (not the AP UI anymore - it would be disabled). So customer doesn't really get a chance to go back and forth.
As per Unleashed UI being similar to cloud UI, that is a worthwhile discussion and perhaps discussed outside of this support forum.