Great EQ. Like the OP, I've used it more often as a boost/shaper than as a distortion.
Does okay as a high gain drive for solos but it isn't touch-responsive and doesn't clean up well.
I've become spoiled by distortion pedals with more amplike behavior, like the TWE-1 and the Hi Volt.
Still, IMO Boneshaker is well worth the price of admission for its EQ alone.