I have probably got this all wrong but I am seeing the Pi/Gertboard combo as a compact replacement for a PC/Arduino combo where the PC is used to both program the Arduino and do the background grunt work using the "Processing" language,
The Gertboard would replace the Arduino for suitable projects and the Pi would take the part of the PC/Processing combo and do the programming and background heavy lifting.
Lets see what the future holds. I look forward to the challenges ahead.
