Satch4u3

Hi guys, Just wondering if any of you have used the G90 with two guitars. If so, how are you making it work for you? I currently am using an acoustic to a DI and an electric into an AxeFx II going direct to FOH. My thought is all I would need is an additional beltpack and switch them off and on as I need them?? Also maybe an A/B switch? Am I on the right track?? :P