I have planted about 12 haskap shrubs. They are still small so I only had a few fruit this year, so I am not expert yet. We are located in Quebec Canada, zone 4a.
Since you cannot import the plants, I would highly recommend that you plant the seeds. You have nothing to lose. I am sure that they will taste very fine. They do like cold climates, so you'll have to see if you have enough cold in your winters for them to thrive.
Keep us all posted so that we can learn from your
experience.