Nice post, I just started looking into Gradle (that's how I found your blog just now), I was told by my boss to try it in our next project, imagine that :)

About JavaFX, I have good knowledge of flex/actionscript and related tools/applications. I've been analyzing JavaFX and to me the main problem is that it still lacks stability and fastness in areas where working with flex is a no-brainer. I really hope that the technology gets mature enough so I can consider making the switch, but for now I don't feel compelled.