Onced program, the iTapStick can be used with both wired and wireless Wii nunchuk controllers.  An OFDP setup on a PC tablet with two iTapSticks is shown in the video below.  We have two wireless Kama Wii Nunchuks interfaced to our iTapSticks.  You can always use the wired wii nunchuk controllers found at adafruit as well if you are not able to find wireless ones.  Let the OFDP fun begin!