Can staff specialists at NSW public hospitals register for gap cover schemes? If yes, are their claims paid at the gap cover rate or the MBS rate?

Would you kindly be able to confirm whether a Staff Specialist of a NSW Public hospital is eligible to register for participation in the Medical Gap Cover Scheme? I was under the impression that while they may be able to register, they are not eligible to be paid at the gap cover rate—only at the MBS rate. Could you please confirm the correct interpretation?