mine serves me right now as my primary camera since my M9 is at Leica getting a red pixel/line issue fixed.
So serving as a secondary camera, the M8 also gives me the benefit of another focal length without having to change lenses, built-in true infrared capability, the higher shutter speed (yes, there have been instances where just one more stop would have gotten me a shot wide-open on the M9 but oh well.)
I've thought about using the M8 as a "180mm" lens camera as well, but this only works if you use a 135 Elmarit with the eyes. The M8 doesn't have native 135mm framelines like the M9 does so since the M9 has the exact same pixel density, using a 135 Tele-Elmar or Apo-Telyt is a much better bet since these are far superior lenses than the Elmarit. If I'm going to go long on the M8, it's going to be with a Komura 200mm.
I got my M8 as a demo a year ago so it was pristine from a dealer. The wear that I've put on it in the past year does make it mine, but it also makes it look like a user camera. No brassing yet but the black coating is getting a bit thin and will probably start to brass this year. I'm sure the M9 will wear much quicker.
I like my M8 but can't wait until the M9 gets back. After that, I'll stop lusting after the thought of selling the M8 and getting a second M9.
I need to go out and take some photos...
Phil Forrest