Mine are production whites. The roosters (2 of them) have never been people aggressive, but they HAVE chased a bear off of the property. Then proceeded to tell me how stupid I was for investigating the field where it came and went (the one was gently nipping at my pants leg and keeping himself between me and where the bear had gone), trying to get me to go back to the safety of the house. The hens are tiny, the smallest birds we have here, but they are dominant. They will peck at the other, much larger birds (pekin ducks, cornish cross hennies and even the turkey tom), but they aren't aggressive, just assertive. They handle new chicks well, when they are integrated into the flock. After the second year of laying, they do lay massive eggs, which customers have called "dinosaur eggs".
