I just looked at 2 small frags I ordered and after dipping them and putting in QT they did not open after 2 days. Just picked off what could be nudi (do not have microscope).
If I were to list things that really need QT then both zoa/paly and monti would be on the list 100%. If you let the pests in you DT you will be screwed! Hardly worth it. You need to clean them up, make sure all polyps are opening, and then wait to see if eggs hatch out more predators.