Turns out the Armadillo mod for clothing may be a bit OP. If you are specced into crafting, find a recipe, make as many as you can, equip whatever armor has the most mod slots and profit. I just found one, and playing on the hardest difficulty now I'm starting to look closer into mods and consumables. This thing gives me more than 60 armor, that's more than most clothing items. And I haven't even done the heist on this character yet. Consider most legendary clothing items have four slots, and this wasn't even an epic or legendary armadillo mod...
Might be nothing. I'll bet the game has an armor cap like Skyrim. But if it doesn't, you stack enough of these things and you might have enemy damage round down to zero, depending on how damage is calculated. I'll do some testing, but I'm not dipping into crafting until I get all the body and reflex perks I want.