Sally Holmes as a parent

Has anyone used Sally Holmes? I’ve been looking at the flowers & it seems not to produce any pollen, even when I’ve picked the buds & have let them open indoors, but whether it sets seed, I do not know; there’s only one listed descendant on HMF

It will set hips when established. I never bothered to grow out any of the seed.

SH hips usually contain only one seed.

No SH seeds have ever germinated for me.

A healthy vigorous plant - triploid?