No I have not tried Gillette Platinum. They are quite a hard blade to get hold of at a good price in Australia. As only available at a couple of suppliers.
I have tried the Gillette Nacet which seemed good. This morning I tried a new Rapira Platinum Lux which was okay but slightly tuggy. So will stick the the Nacet for a while. I think it is just taking me a bit to master the FOCS.
Gillette Platinum are the best blades I've used in any Fatip razor, followed by Rapira Swedes. Other notable blades for it are Treet Platinum and the 7 Green (Russian). The 7's are especially forgiving. It would be really hard to cut yourself with the 7/Fatip combo. Treets will bite if your aren't somewhat careful. Permasharps are pretty decent to but not the best with fatip.