The interesting question is whether an examiner would insist on setting
up a situation, however improbable, that would require the student to
do partial panel flying without the GPS.

What do you mean "improbable"? The student gets his rating in a Cirrus,
rents a 172 on vacation, it has no GPS, and it loses vacuum.

Jose
--
Get high on gasoline: fly an airplane.
for Email, make the obvious change in the address.