Thanks man and yeah on this model and a few others, Carlos Santos use goatskin suede. Its has a much shorter nap and a tighter grain, thinner than cow but tougher, so far i've been really impressed with it.
Edit: "You see Carlos Santos uses cow suede (gaucho) which is very soft and supple but also goat suede (camurça)." (https://www.misiuacademy.com/carlos-santos-9156-review/)
Beautiful!