Wrong thread, but I haven't seen the correct thread get created yet, so this will do.
AFAIK, yes this is just the VPN/privoxy piece without the download client, be it nzb or torrent.
I don't think torrent clients can be tunnelled through a http proxy, which is what privoxy is.
What you can do, is install this as your privoxy gateway, so you can stop your vpn enabled downloader without disturbing the proxy. However, this means that your vpn account will have another constant connection. I don't know the limits on the various VPN providers.