Yes, but I believe things might work differently in M2, because a unit starting with flesh armor and sounds will use metal sounds when upgraded to say chainmail (if I'm not mistaken, to be honest I haven't payed attention to this sort of thing while playing. I will now ), whereas in RTW armor upgrades didn't change the type of armor worn at all, it was a much more generic system...

Guess we'll know for sure when the Holy Grail, I mean the patch+unpacker, is available