I think I understand now - thanks for the reply you have confirmed what I was beginning to suspect.
This then would lead me to another logical question, if I choose to go down the two separate network route, is it possible for the two networks to see each other as if they were on the same network for sharing files etc.
I know I want the world here.
The goal is to connect to the VPN router (wired & WIFI) and use the Internet through IPVANISH but still get local network access, at the very least get local network access through wired connection.
I have now managed to get everything working.
OpenVPN is working with ipVanish.
I can get to my primary LAN from the VPN router (both wired and WIFI)
I am working on getting back from primary LAN to VPN router, it seems that I had to have the firewall turned off to get to the VPN router something must be wrong with what I am doing with the ipTables or I have some other settings wrong?