Seems more similar to tinc[1] than to OpenVPN. How well does it overcome firewalls?
I've gotten used to just setup tinc on all my machines automatically with puppet and it's really nice to have an overlay VPN over the internet that is peer-to-peer instead of having to route everything through a central server. The only thing I miss is better firewall piercing. The easiest way is to just move tinc to 443 but that won't work for servers where I actually want to serve HTTPS.
With sslh you can use port 443 for both tinc and https.
https://github.com/yrutschle/sslh
Also you can configure haproxy to do the same.