RainX works on screens but be careful on visors (Shark visors do have a coating that will peel if Plexus is used on them) as some have coating which will go bad if you use products on them
Contact Pledge in OZ and as them to start bringing it over. Tell them that apart from the normal furniture polish uses, it is brilliant for polishing bikes, and that you learned from your recent trip to the USA that all the HD riders ( and many others as well) use it to keep their bikes looking new.