I use PrintDisplay extensively as I’m using Rhino to create a big infographic. All my guide lines and points are set to ‘No Print’ under Print Width, and they are nicely hidden when toggling PrintDisplay.
I will still accidentally select them though, of course. This can be quite dangerous. Is there a way, or perhaps is this an idea for the future, to block objects with the ‘No Print’ property when PrintDisplay=On ?