I have a few undeveloped images that I'm quite concerned about exposed on PanF+. ...
After much deliberation I decided to go with Ole's advice. I haven't done any real testing, but after running a few PanF+ rolls through Rodinal, as originally planned, I got really uneasy about the possibly underexposed images.
I developed the film in TFX-2 (the Formulary's T-film friendly version of FX-2) at twice the normal dilution for 90 minutes. Aggitation was 60 sec initial, another 30sec (neurosis induced) a minute later, and another 60sec at the 30min mark, with the last hour totally still.
The results are really promissing. The most important thing, however, is the images I was concerned about came out totally fine. Another half stop with a little expansion and they'd be perfect. In other words, they are perfect! Totally printable.
As these things tend to work, the images aren't quite as dramatic as I remembered them/bulit them up in my head, but that's another story! We'll see how they print.
A happy ending indeed.
Thanks for the advice everyone, and thanks for the Fx-2 recommendation Ole.