From all I have read and heard I figure it is less how tall you are and more how tall you get. If your 6'6" and stand straight up to throw down then yes, this could be an issue. If you stay low and have good mechanics, then look at it as a blessing.
Think of it this way. If you call an intentional walk, you will be able to get the ball out far enough so that someone like Cabrera wont drive a run in with it.