I ran the nev front/ sb8 combo for awhile. Makes for a good compromise between speed and grip, but I ditched it in favor of a more balanced setup. The sb8 skates around on anything slick or wet like it is made of lard.
Running the sb8 up front IMO doesnt work anywhere with roots or fast corners. Six-mile for instance in anything less than perfectly dry conditions is scary with a sb8 up front.
Funny that you mention the combo though, I noticed it on a few bikes in this months various mtb mags.