Would it be reasonable to port GIMP to iLiad? Looks like it's possible to get the WACOM support in GIMP:
http://wiki.gimp.org/gimp/UserFaq#he...74c7868bb62e78
The drivers are there, so it looks like it's just a compile option on GTK -- assuming iLiad doesn't have GTK already. I suppose this still wouldn't support the pressure-sensitive features of the tablet, but it would be nice to have a "real" graphics program on there, given that the graphics tablet has got to be a significant chunk of the cost of the hardware.
(I know we still don't have stylus calibration, but iRex are promising it "real soon now" according to a recent post in their forum.)