Sorry for my late reply…
That’s very bad news if there’s no pro solution for that. And it’s a pity if you tried VMiZettle and got disappointed too…
Yes, in that case, putting Virtuemart in the center and let him rule the whole store (Web + POS) seems to be the solution…
We'd need a web connexion, a Barcode integration for VM products, Payment methods (?) for Payment terminal + Cash.
More customization?