Good afternoon Palmpje,
One of the moderators on the forum started it from seed, then sold some to another person on the forum.( Check the entire threads on M. i. itinerans and photo albums). Then I was sold this one itinerans. I've had it less than a year.
I had to wait and watch for a while before I obtained one, be patient. Good growing and good weather to you.
When it flowers I plan to cross pollinate it with a diploid Musa acuminata. Keep an eye open to the forums.