As I am still waiting the return of my converted camera I took my 5D and my Ricoh GRDII for a spin with a Hoya R72 filter.
The Ricoh is seems to be a lot more sensitive to IR than the 5D as the same shot on the Ricoh was giving me an exposure of 1 second compared to 13 seconds on the 5D.
I also found it a lot easier to create colour IR images from the Ricoh compared to the 5D’s when using Lightroom to convert the Raw files. I was a bit more successful in creating colour IR using Canon’s DPP raw converter.