Lorica Musculata made of Metal or leather?

[Vitruvius]

I have noticed after closely examining M. Aurelius Column that there are a number of armor types: Classic mail, Classic Squamata, Classic segmentata. Then come the oddities like what appears to be a later version of the segmentata, An almost Brigandine type orf Jacket, and a Very smooth Cuirass of some type... not to mention several types of helments. SUGGESTION;!!!!!!! why doesn't a number of Board members attempt to make various versions of the odd types, like the latter segmentata...one out of leather, one out of metal.....Same things on the helments.
Just an idea.....why not give it a whirl?
Salvete,
Vitruvius