suppose there is no reason why you can't go SVFR in the Class A, convert to IFR once inside the Class D CTR and then ask for an ILS. Of course, one would have to ask why?
Cows getting Bigger
It is very often the case with island climate that you do get cloud over the island but clear blue skies away from the island.
So what maybe a lovely VFR VMC flight can turn to low cloud on the approach.
Pace