David, this method of hiding hyphens is brilliant. User Pianoleo came up with the same thing, differentiated between left and right pages — see here.
I’ve been trying to figure out how to hide hyphens in a layout in a project that has tight enough spacing that entire words appear with no breaks between their syllables at all. The approach I was planning on taking was to switch syllables to “Whole word” type. Since that’s a global setting, though, different layouts with different hyphenation couldn’t coexist. I was getting ready to make two different versions of the project file. You and Pianoleo saved the day!