It's done. Nine of us were at the Scion dealership this morning to sign papers, very nice deal. Lots of Whiteout coming! A huge thanks to Saibot for doing such an excellent job herding the process along over the last several weeks - especially since he was doing it in the middle of his university exams. He had one on Friday and another is coming Monday.
I checked the upgraded head unit out in person, it does not do nav but as we got dealer cost I went for it, at a few hundred. It's a new unit also available in the 2013 iQ. Looks great, huge improvement over the default, good colour and resolution, and you can turn off the screen completely at night in case the LCD backlight is a distraction. Easy to use touch screen, little pressure needed.