Side note and personal observation: The new cavity mask painting feature is verrry much the same kind of feature as the curvature mask painting in 3d Coat.  In fact, I remember thinking the same thing about the matcaps feature, introduced back in Blender 2.66, and thought they stole that idea from 3d Coat back then.  Same thing with the stencil texture painting introduced in 2.67!  Again, a unique feature found first in 3d Coat.  Yikes!  If I were the guys at 3d Coat, I'd be a little pissed.

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.