Sounds like it is easy to apply/remove.
A couple of my thoughts. One, I never liked the idea of a combination cleaner/wax. It seems to me that the cleaning part should be done separately. If not, I think that some of the dirt is captured by the wax and the surface is not as clean as if it was done separately. Two, how long does it last? There are alot of wax products out there but most of them last about the same time ~ 1month. Third, one thing that does it all, gelcoat, paint, metal is questionable. In doing it all was something left behind to make it usable on the other surfaces?
I guess until you actually try it and compare against what you are using you will never know. It maybe worth a try just to get some experience.
Have you tried Zaino, it is a pain to use but lasts.