Hi Glen, just an FYI: The topic is addressed in the Daredevil Omnibus.
As part of the 'Bonus Material' they publish the thumbnails to EACH of the 38 pages of DD190, side-by-side with their accompanying Color guide (which were done on the finished inked work).
Some are very similar, some are very different. It's a great way to train your eye to learn the changes (facial stucture, anatomy, lighting) that Klaus made when he pencilled those books. (sorry for the blurred edges... those omnibus books are hardly scanner-friendly)