The decals were more a starting point, a set of guides to help me with the finer details. The skin is all original work.
Of the two, I like the "block" version better -- it's a bit easier to see and define. I did a quick test and getting the narrow slashes connection the different strokes didn't turn out so well because of the low resolution involved (when you only have a pixel and a half for width, it's hard to taper things, etc). So I'll leave it like I had it (for now).
On another note, the feedback has been informative, helpful, but is tapering out. In light of this, and in an attempt to get this into the next skin pack, I've submitted the skin.
I just hope nobody comes out with ground-breaking photos of the real thing that forces me to re-do it from scratch the day after it's accepted!