4thGen throws right handed and he is right eye dominate. He was a switch hitter his whole life. Before 10 years old he just alternated at bats. After that he took at bats depending on the pitcher. He gradually became a better hitter left handed becasue he had so many more at bats from that side. He hated taking BP from a same side pitcher. Just prior to his Sr. in HS he developed a bone chip and damaged some tendons in his left wrist. He could not hit right handed at all until August after surgery. When he started back his right handed swing was ugly. After fall ball his freshman year he and the coaching staff decided he was better off hitting against lefties left handed then right handed and now he is a lefty all the way.
Hitting lefthanded is an advantage and if you can hit rightys better left handed you should do it. if your a lefty swinger there is not much point in switch hiting. His college team has a bunch of left handed hitters but they just don't have to face that many lefty pitchers.