I didn't buy them, but my V-Strom has the non-Pro Nomada cases. The owner before me did buy them, probably sometime in 2015. When I was buying it, he mentioned that he wouldn't do it again, something about really poor communication, and very long shipping times. Things may have changed though.
Something to consider, if you have any issues with them, you then have to ship them back to Poland and wait for them to be returned. For example, both of my cases leak. If by chance they were under warranty, not a chance I would bother shipping them across the world for repair.
For something like this, I think buying a product with local (or reasonably local) support is a much better idea. Holan's these days are priced fairly similarly with the competition, I don't see the point.
Current: '15 Tenere ES - 30k km
Past : '06 FZ6 - 115k km, '06 KTM 625 SMC - 30k km, '06 V-Strom 650 - 80k km, '07 FZ1 - 70k km
ďInstant information is instantly obsolete. Only the most banal ideas can successfully cross great distances at the speed of light. And anything that travels very far very fast is scarcely worth transporting, especially the tourist.Ē - Ted Simon, Jupiter's Travels