99' Evinrude Fichts and BEP VSR

Plan on doing a little rewiring of the boat in the offseason and hoping someone can give some input. I know the Fichts have an aux connection for a house battery, seperate from the start battery. I can use the BEP 715 cluster, which has switches for start and house battery plus a switch for emergency parallel. This would let the motor work as a battery isolator since the start and house batteries would be connected at different terminals on the motor. The only problem that I have with this is that only one of the motors would be charging the house battery. If I use the BEP 717-100A cluster, then both motors are used to charge the house battery, but nothing is attached to the aux input on the motor. The question that I have is if the voltage sensitive charging relay would play nice with the EMM and charging circuit.