Silicone is very hard to remove from a guitar and is detrimental to just about any finish that's applied on top of it. So if you ever need to touch it up in the future, only use a known cleaner that's silicone-free. A wax polish like that works by filling in the small valleys in the finish, and the wax moves and gets worn off over time, so you need to keep applying it (same effect as wetting a sanded surface). If you use a cutting/rubbing compound to polish the guitar, this smooths off the ridges so that there are no valleys (or only very small ones indeed), so you get a nice shiny finish that you only have to keep clean with a duster.

Of course the finish has to be hard enough to take a good polish, and I''m not sure how shiny you can get DT without applying something over the top.