Hi,
this seems to be an ancient approach to language management with Joomla no ?
Not really.
If you want to follow the Joomla way it means that you need to duplicate all your products and have one product per language. ; Like you need to have one article per language.
You can also do that in HikaShop but you would have some issues regarding the product code (which need to be unique) and about the product stock.
Is this a permanent way of working for multilingualism for HikaShop ?
Nothing permanent or eternal ; but for the moment it's the best solution we know.
Regards,