Then maybe we should just buy these. Will "+Steel Plate" under Silk Vest (HT66) fit just fine? These are TL6, so should be available.
Well, a Silk Vest and the Concealable Vest (thicker, maybe Kevlar?) are made of different materials, so it may not be as good. The DX penalties for layering armour may apply?
Anachronism will never high-light the folly of my convictions!