@SAPROTSENKO I spoke with one of the developers of WC Vendors in April. He informed me that they were working on WC Vendors Pro 1.4.x and that, once that major release is stable, they will review the integrations, including the multi-currency one.
Please be aware that I’m the author of the Currency Switcher, but I’m not an official spokesperson from WC Vendors. I can only relay the information I received myself. 🙂