Yes, here are some pics from the balbisiana in the Kölner Flora:
This is the pic from July 2001
In the left Musa basjoo and in the right Musa balbisiana, basjoo winterprotection for basjoo and balbsiana
The balbisana comes back in the spring 2001!
You see, that it's possible!
But I don't know exactly which provenance. But it might be a mountain provenance, provenances from the higher mountain altitudes are hardier.
Best wishes
Basjoofriend