What does this mean for WKF users? It means that we can now have a GameCube which will power on straight to Swiss to browse the SD card without needing to install a toggle switch/button on pin 29. Additionally with a MegaDrive PCB installation kit, it's very easy to set up your GameCube with a Wiikey Fusion (boot Swiss, backups from SDGecko/WKF SD Slot, etc, and through that, homebrew/emulators/etc) and still keep your original DVD drive installed and fully functional!
All you need to do is run the software and follow the video in this post to downgrade your WKF to 1.0 internal firmware which restores autoboot, and at the same time Swiss will be flashed as the boot menu.
Thread to purchase a MegaDrive/WiikeyFusion:
viewtopic.php?f=18&t=1235
Full video of megalomaniac demonstrating it:
http://www.youtube.com/watch?v=eaNWNP0ZfG4
Thread where it all came to fruition:
viewtopic.php?f=20&t=1281