Here are both side by side:


B actually has some Sepia ink in places and black in other areas(bottom right in particular).  Other than being a bit darker in places, the samples look quite similar when set side by side.  B looks a bit filthy which I don't particular like as an overall appearance.  However, it may work well to shade some specific areas such as valleys, around chimneys, etc in the finishing stage as Matt alluded to. 

I'm still having a little bit of a hard time picturing this scheme spread over a large area.  Any additional ideas or feedback would be most welcome.  Anything from altering this scheme in some particular way or something different all together.  For now I'll just have to see if it grows on me as I continue wall construction.