I actually did with my company and anyway it was a bad decision. JavaFX and swing customization is really not easy and not well documented. JavaFX uses custom XML which make no sense to be honest when you want to do nice design. And it requires custom CSS too.

Additionally, their design are bad(I mean their Java API).

We spend a whole year making an app with it, at the end we decided move away from it, like the rest of the java community if fact that do not really support desktop applications anymore.