Still concerned about this issue. Can someone please verify that ExpressVPN will, in fact, work with OpenVPN on the GL-AR300M?
Update: A good percentage of my clientele in the field who want to buy this router travel to China on a regular basis. For China, my company uses ExpressVPN. They are a pretty big VPN player, and on the list of supported VPNs. Hopefully, someone can verify if/how they got it to work.