Someone who used a VPN to unlock : does it relock after restarting steam without VPN?
I believe so, yes. What you can do is unlock it via VPN. Play it once, quit, then boot Steam up in offline mode and disable the VPN. That way it won't relock and I can play it (singleplayer) until it launches in my region.
It also should work if you use a VPN to unlock it and then while playing the game ALT Tab out and disable the VPN and you're then free to play online. It will relock next time you go to play or restart Steam though I believe.