PBA: I’m aware of that Sha’arei T’shuvah. I was always taught that we hold L’ma’aseh that a Kattan and a Ger count with a Bracha.
(I recently saw a T’shuvah, though I forget where, about someone who was going to cross the date line and would miss a day, what he should do. I didn’t get to the end though, because someone asked me an actual Shaila while I was in the middle of it.)