I wanted to share my experience using the CKB drivers, just in case anyone else is experiencing the same 'no devices' issue. I'm on a Hackintosh running OS X 10.10.2.
I received my new K70 RGB, plugged it in and installed the CKB drivers. All good, software loads. It tells me that the 1.2 firmware update is available and I accept. It flashes the new firmware and suddenly there are no devices found.
I try all the USB ports, no luck. I boot into Windows and confirm that it works, it does. I try all kinds of terminal commands, killing the daemon, etc. Nothing.
Finally, I boot back into Windows and use CUE to manually roll the firmware back to 1.1.5. I boot back into OS X and I find the drivers are working perfectly and my keyboard is animated again!
Moral of the story; if your keyboard isn't functioning, the 1.2 drivers may be to blame; try downgrading :)