Replying to CAST question

Sorry if this is a dumb question, but I do not have any personal experience with pivot bindings. I was thinking about upgrading my 50/50 binding from a shift to the CAST system next year, but I had a question about boots. With my current setup, I ski inbounds with an inbounds boot and in the backcountry with the touring version of the same model boot and adjust the AFD and vice versa. Would I be able to do the same with CAST or would I have to choose one boot to use all the time with that binding? I am aware that the CAST people can modify alpine boots so that is definitely an option if I can't switch between boots. Thanks for any insight.