Force VPN client to second wan

[nihon]

Hi,
My Asus-AC68U is connected to internet through an ISP router. The ISP router is configured in bridge mode.
I have setup a PPTP client in my Asus-AC68U similar to HideMyAss service.
I have also setup a couple of OpenVPN servers on the Asus-AC68U.
I have setup the asuscomm.com dynamic DDNS service.

This means I can easily VPN into my LAN, I can access the FTP on the router directly using the DDNS, but only as long as the PPTP VPN client (HideMyASs) on the router is off.

Question - If I enable dual WAN, would it then be possible somehow to keep a normal connection to my ISP on WAN1 and enable the PPTP VPN client (HideMyAss) through Wan2 simultaniously?

Routing different LAN computers out over PPTP VPN (HideMyAss) or Normal to ISP.

Maybe even "proxy" a OpenVPN server on the router such that all its OpenVPN clients connected are browsing out through the PPTP VPN client connection (HideMyAss) on WAN2.

Question 2 - If I would change to another VPN provider that supports OpenVPN instead of PPTP, would that help solving these issues?


Thanks