This is an interesting topic. If you are a consistent hitter do scouts really care?
When I see the pre-swing of Kevin Youkilis I wonder how the guy can hit but he does and is successful. http://youtu.be/xVrzkbGuxuQ
Rod Carew was another one with an odd swing but was successful in the big leagues.
http://youtu.be/Ezn5Z2cLVgw?t=30s