This is a good question, I hope we can get an authoritative answer, with references, to it. I don't know the answer, but my contribution would be this:
We all seem to understand that PAR & SRA are ground-interpreted, Instrument Approaches. With DA and MDA's comparable to pilot-interpreted instrument approaches, they can hardly be considered "cloudbreak" procedures. So perhaps the answer, or a clue, may be found in the definition of "visual use only" for a runway. Does anyone know that?
I do have a contact who should be able to help, but I'd like to see if it can be sorted out here first.