Both of my best friends are Norwood 1's. Both of their Fathers are Norwood 1's and even both of their Maternal and Paternal Grandfather's were Norwood 1's as well, there is absolutely zero traces of baldness in their families. They get to keep their hair forever.
Yeah they are fullheads though most have fathers that are bald. I do have a friend who still has a juvenile (rainbow shaped) hairline and his father is a Norwood-1 as well. He'll have his hair forever.