Here is an attempt to do hard surfaces in mudbox. All I had in mind was to do a odd shaped helmet and this is what I came out with. Zbrush is still the king compared to mudbox in this area, but it was fun to get in there and try to make hard surfaces without all the fancy tools of zbrush.
I think I'm going to take this into topogun and retopologize the individual armor pieces and make it all nice and cool in Maya. After that I will probably finish an entire suit of armor in the same fashion.