Armor - you mean like robot suits?

(Not sure of any other armor that would nearly double your girth!)
Hmmm... New Virdigris, eh? Sounds familiar! (Gotta get my free displacer cloak...) Looking forward to seeing your finished game, in any case! (I do like wintery campaigns.)
Another size discrepancy I found in MMII was the anklosaurus (one of my favorite dinosaurs since childhood) - but this time, the MMII gave a smaller size than the normally accepted figure (maybe that was the accepted figure back then).