Howdy, Chris from io Networks here. I tested the new serial port on the iPad yesterday and it works fine. Whether or not SkyFi can use it is something else, as my serial port requires the iDevice to be jailbroken to be able to access it.
They should be on sale through
http://www.ionetworks.com.au in about a month, or if you'd like to test before that, I can arrange to set you up with one of our beta units.