For instance
Zakk only plays his solo's in minor pentatonic scales, but he may change the progression a little from say... 1 b3 4 5 b7, and then for his next solo, he'll use the precise same fingering, but move it up or down a step.
Blues players usually play in this one standard penta scale using 12 bar chord progressions, and thats it.
This isn't really my field of expertise, I'm a bass player who could barely read sheet music, but the point I'm trying to make, is that I find it a little overused and overhyped.