Multi WAN with dual VPN

[N0_Klu3]

Hi all,

I'm wondering if there is a guide out there somewhere that I can follow.
My current setup is I'm running dual WAN with 2x ISP's and added to a GW group.

I would like to get a VPN service and route the traffic through both WAN's while maintaining my dual WAN setup as in so that I still get the dual GW load balance.

Can someone advise on a guide on this?

Also which VPN service?
I was looking at NordVPN or ProtonVPN. Any others I should consider?