Cissy, I'm pretty sure all the colors on our XFs are enamel whether it's metallic or not. I like both, but non-metallic colors are usually easier to match if you have to do it.
That would be a big decision to make, trading a fairly new Vette in on a XF. I mean right now you have the best of both worlds so to speak. Glad I don't have to make that choice. Good Luck!