I will leave it another few months before trying it on the full car. I tried it on a single door panel a few months ago but the Gyeon "Halo" over the PPF was still doing the trick so pretty pointless. But ceramic does scratch and wear over time (faster than many think) and so an alternative will be needed at some point. Or maybe just another coat of ceramic. For me, it's just to bead off the PPF and make it look nice.Might be limited benefit on mine too, I'll see if it adds any improvement as I've already got the Gyeon quartz kit on my car, topped up with both Cure and QD
All that said, properly applied, high quality wax still looks stunning, better even than fresh ceramic. But it doesn't last more than 3 or 4 months in my experience and frankly I can't be bothered to keep re-applying these days