If the abuse is just the tool to get the job done (power and control) do you think the above applies?
People who put their needs and feelings aside quicker experience less physical abuse? I experienced emotional and mental abuse and threats of physical because it worked and I very easily ignored myself because of my childhood experiences. I know this because he told me he was very capable of being physical.
Having to hit someone is much more telling of their bad side and motive and very hard for them to come back from I would have thought. So more of a last resort when all else fails?