This will stir the pot but it is fall. We talk about it here all the time and it comes up in my community all the time because of our high school coaches.
Would you rather have a knowledgeable coach who has the skillset but lacks the personal skills and is a butt or not so nice a person on/off the field? Or would you rather have a great ethical guy who lacks skillset but teaches your kid great life lessons and how to be a man/great role model?
I know the perfect is one who has both but I think that is less than 5% of coaches in my determination and I know my determination is not the same as many on here. I think what you do off the field and your reputation as a person is part of the personal skillset.