I think RAW and jpeg debates are mostly silly. Yes there's more rescuability of the raw file, but if you expose correctly and the range of EVs in the image is not great, then a jpeg is fine. I sometimes shoot raw and jpegs at the same time. I don't think the M9 jpegs are so bad, the colour ones. The black and white jpegs are sometimes ingenious, unmatchable with the raw file even with a lot of knowledge and time spent. Raw adherents seem to think that jpegs are useless and can't be adjusted at all. JPEG huggers are worried that switching to raw will somehow commit them to hours of post processing. I hardly touch many of my raw files.
(I first shot raw with the M9 a little over a year ago. I was petrified at the first import into Aperture. I was stunned that instead of 10001110011010110001 appearing in the editing pane, there was a nice colour photograph.)