As opposed to digging them up, I ended up planting all my potted bananas except for the ensete mauraliis which still have very short psuedo-stems and don't look large enough to put 1 or more ft in the ground. Those can hang around inside by a south facing window until next spring so they can get a bit taller before going in the ground.
I find that the soil temperature is the most stable and regardless of temperatures in the upper 30s already, they are all still holding up since they are so close to the ground. All of my bananas have been deep planted and they all look better than when they were still in their pots. These guys will be getting leaf bags put over them pretty soon, but no-one is raking up their leaves yet.
Here's the latest blog on them.
Steve's garden: Fall update on the banana plants #2