Interesting Gary
I have had a 1DMKII over a year now and I have yet to clean the sensor.....am not saying it doesn't need a clean as I can see dust bunnies on anything above F13 in clear blue or grey skies.
Obviously mine doesn't get the pro use yours gets
but I can say that I can't see it suffers from dust problems anymore than my D2H.
I also was led to believe it was the 5D that was of concern with regards to dust.
