Only I've been using sshuttle to make ad-hoc tunnels and it's exceedingly easy - there's details at http://alicious.com/digitalocean-free-credit/ (if you'll forgive the rather mercenary promotional slant in that post).
In short "$ sshuttle --dns -r root@X.X.X.X 0/0 --exclude 192.168.0.0/9 # start sshuttle" tunnels everything but my local network over a server with SSH on it [I've not checked for myself with Wireshark yet, do your due diligence].
When setting up I found [Open]VPN a bit protracted in comparison.
VPN and SSH are only partially overlapping in their features. Are you suggesting that SSH only allows local connections, and your VPN is what allows you local network access?
