Answer
No — concurrent-user licensing isn't available; a normal named user can only be logged into the client from one machine at a time (only the application-owner account can be logged in from multiple machines simultaneously). There's one specific exception: the same named user CAN be logged in from multiple machines at the same time if those machines share the same underlying OS-level user ID for authentication — so this is tied to the OS identity behind the login, not simply to how many physical devices are being used.