I still use sulfite with PA since I had already done all the tests with a classical Xtol clone when Patrick presented the Pglicol idea.
Someone else did a compare, and there was a very small difference, with sulfite/borax being slightly finer grained than no sulfite/more alkali. I understand Patrick does not agree with that conclusion.
Since the difference was so small, I've decided not to run all the tests again.
Regarding PQ for paper, PQ without sulfite is a staining dev, not a good idea for paper, so here it is not related to keeping properties.
I do not think sulfite is a make or break choice for films - just pick the one you like the most, but from the above it's a must for PQ paper (and fixer also).