The issues shooting the Leica M9/M-E sensor at higher ISOs are well documented. But it should also be well documented that, when shooting black and white, you can forget those noise concerns almost entirely.  I very often will shoot JPEG FINE mode on the b&w setting when I make that decision to shoot b&w. I like the way they look and I always have since my first M9. I’ll tell the story of how I came to love shooting b&w JPEGs straight out of the camera some other time. But I love them. And at 18 megapixels in b&w, how much image data do you need? That was my attitude three years ago and it’s still my attitude today. Much more on that sometime soon.