The annoying part was that after it ran, it would hang at "Initialization Sequence Completed", and required a second terminal connection to continue. If I Control+C'd, it would kill the VPN connection.
After a bit of searching, I found that I could run it then background it by going
> sudo openvpn Reelix.ovpn &
In which case it would still hang at "Initialization Sequence Completed", but I could Control+C it without it killing it. Close... But the hanging annoyed me.
After a bit more searching, I found that OpenVPN had a --daemon parameter, but going
> sudo openvpn Reelix.ovpn --daemon
Threw up an error
> Options error: I'm trying to parse "Reelix.ovpn" as an --option parameter but I don't see a leading '--'
> Use --help for more information.
After much searching, I eventually discovered the trick!
> sudo openvpn --config Reelix.ovpn --daemon
Success!
To kill the connection, I could either go
> sudo pkill -f "openvpn --config Reelix.ovpn"
Or
> ps aux | grep openvpn
> sudo kill -2 processIdHere
