I've promised long ago to explain the procedure to create a Icaros pendrive, but spare time to write it has been scarce, so you had to wait a little longer than expected. But now, my step-by-step how-to is finally ready!
2014/01/13 -> little update for this post. The guide had been fully integrated in Icaros Desktop's manual. Please grab your copy from the website and follow the procedures incuded there.