score:3
Yes, Gol allows it and there is no specific restriction on its size and weight.
This is part of a conversation I had with GOL (I had to first explain what I meant by personal item with example of a camera or laptop bag):
GOL: I was checking and I see that you can take a little bag like the one with a camera with no problems additionally to the carry on bag
Itai: Great. Are there any restrictions on the bag? Size or Weight?
GOL: I don't see anyone, it only says little bag with personal items.