I think our experiences show that you can't write off or categorise any cat completely, as they will always surprise and confound us.
Anyone remember The General - the cat Shonagh's friend helped to reform from a beaten up old tom with a hatred of people, to a cosy and much loved house cat? What a transformation in his life, bless his paws.
Barley, one of our semi-ferals, spent the night curled up in between me and OH, her paws just touching my hand.
Still couldn't get her in a cat box though.