I would steer clear of this combination, unless you're willing to sacrifice a few rolls to arrive at a development time that gives you the contrast you want. Both PanF+ and Rodinal are tricky to tame, each tending to give excessive contrast on their own. The combination of the two doesn't seem like a good idea to me.(posted 8668 days ago)
I haven't used PanF+ that much, since T-grain and Delta films actually give finer grain, but I used PanF a lot in the past, and it didn't respond well to acutance developers. Beside which, the sharpness didn't seem to vary much with developer type. A solvent developer like D76 gave practically the same sharpness as Acutol, but the tonal range was much better with D76. I don't think PanF+ is any different in this respect.