Redundant ISP connectivity without using wan switch

Currently for my work we have both ISPS plugged into a switch that is setup with vlans so we are able to plug both isps into both switch’s. If you are able to get a second port from your isps do it because the switch becomes a single point of failure. But anyways after you have that setup just have your firewalls arp each other and once your primary goes down have you secondary pick up. Moral of the story… Vlans.