In the meantime I'm enjoying a *training* session.
Duck tape turned sticky-side out wrapped around the pole offered a few minutes of amusement, but ultimately the critter just blew by the unpleasantness as quickly as it could and reached the top. Now, to the top of that wrapping I've added strips turned sticky-side out adhered in just a tiny area, but all the way around the pole, and left to hang. I'm hoping that the scare of being caught up (temporarily, at most) in sticky tape will train them away.