FWIW, from Kodak's Professional B&W Films F-5 (2nd edition, 11/76):
'Verichrome Pan Film is often considered a film for amateur use only, but it is sometimes used by professional photographers. It has emulsion characteristics similar to those of Kodak Plus-X Pan Film. It could be considered as an alternative to Kodak Plus-X Pan Professional Film, without the retouching surface...It is capable of recording very professional pictures.'
So what are the emulsion characteristics of Plus-X Pan?
'Plus-X Pan, Plus-X Portrait 5068, and Plus-X Pan Professional have very similar emulsion characteristics. While the graininess is in the same category as that of Panatomic-X films, the resolving power and degree of enlargement are one category less. These films have short toe and long straight line characteristics, making their use ideal in high-flare conditions such as are usually encountered outdoors, as well as giving them unusually good tone reproduction characteristics.' However, elsewhere in the same publication, Verichrome Pan is described as having a medium toe.
BTW, there are (were?) two other Plus-X films: Plus-X Pan Professional 2147 and 4147. These are 'all toe' films designed for unusually good highlight tone separation.
Of course, this is all from 30 years ago, and perhaps not very relevant to today's version of Plus-X and the last version of Verichrome Pan. But I have to confess to getting slightly misty-eyed when I look over this well-written, information packed book, thinking of the film choices that once existed. Also thinking of the many excellent publications Kodak used to have for professional photography.