Screenflow Recording Monitor: multiple cameras

I have my laptop's built-in webcam and another camera source going into a Blackmagic ATEM switcher. I can see both feeds live when I configure a recording, but I can only see the ATEM feed in the Screenflow recording monitor. Maybe there is a recording monitor feature hidden somewhere I just didn't see, but if not, it sure would be nice to see both camera feeds in the recording monitor.