Interesting thing I came across. Surprised to see no talk of this in the forum yet. https://lists.zx2c4.com/pipermail/wireguard/2019-September/004580.html
Hi to all, the latest Eddie 2.18.8 experimental released today, works with wintun, please test if interested.
Go to https://openvpn.net/community-downloads/, at bottom "OpenVPN 2.5_git wintun technology preview", click the "here" link and install.
If you already have the right "openvpn.exe", use it directly: Eddie will install the wintun driver when needed, and also create the adapter.
Eddie -> Settings -> Advanced -> OpenVPN Custom Path -> choose your "openvpn.exe" from 2.5,