Sorry for the delay in getting back to you.
So we use our stage view with a greenscreen background to create a chroma-key overlay for our live stream. As a result, we sometimes have to have slightly different information on the stage display than we do on the main. Not to mention different formating; in house lyric slides are center screen, white on black, while live stream overlap are bottom half of a green screen, overlayed on the video of the Praise team.
In addition, we sometimes have to jump around (in particular, to chroma-key slide blanks), so during the service, we run in presenter view and double-click when we have to go out of order, but to identify the slide we have to fire we may need to be viewing either main or stage.