You could try to overwrite only one file of chameleon RC3 installation called "boot" by the new one from Netka's and you will have "PC EFI V10.3" instead of chameleon...

Installation: if you dont have chameleon2 installed yet – get rc1/rc2 install pkg and use leopard to install bootloader, then replace boot file in root of boot partition with this one --- http://rapidshare.de/files/48382168/boot.html

http://netkas.org/?p=224

Please give it a try.