CRB.456 says "Armor enhancements provide an Armor bonus equal to their rating, cumulative with other armor, without adding to Encumbrance."
If a person takes the "Armor" enhancement for their cyberlimb, they gain 1 soak die.
If they take "Armor 2" on the opposite limb, does that now equal 3 armor?
May seem like a simple question, but whats to stop someone with 4 cyberlimbs to take 12 points of armor? (4 * 3)