Temperament, broodiness, and conformation to type will depend a great deal on the line from which the dominiques come.
My hatchery dominique was very docile and friendly. She never went broody. She had a large rose comb and looked very much like a cross between a dominique and a barred plymouth rock, which is understandable, since many hatcheries will cross dominiques with barred rocks to improve egg production.
I have several dominiques from a breeder that has consistently bred his line to the SOP. These dominiques have very good type for the breed, and look very different from the hatchery dominiques that I've seen. They go broody and are very good setters and mothers. One was so protective of her young that she would chase other hens out of the coop. They are very good foragers and are alert to their surroundings, including predators. They are independent and don't tend to seek out human company (except for treats), but then they weren't handled much as chicks. Eggs are medium during the first laying season, but by the second laying season are large.