Sorry, no clips from me, but she's a buzzy fuzz blast, a little cold sounding to me. Not as tubey or warm sounding as the Sansamp Bass DI, but I reckon it cuts through a little better. My MXR was the bomb (to me) for a while after I got it...but tried a Sansamp Tri-AC at practise last night and MY GAWD - amazing distortion from subtle to full-on grind.
I wouldn't call it fuzz. Out of the 3 categories: fuzz, distortion, and overdrive, this would fall under the distortion category. As nil pointed out it's very buzzy and cold and cuts through. But it's also very subtle compared to something like a RAT, and doesn't sound as much like an "extra layer" compared to other pedals like a DOD Death Metal distortion.
You can definitly get a lot of fuzz out of the M-80 if you turn the gain up really high and keep the blend knob fairly low.