His handle setup isn't that strange, his first favourite bat he had made by Julian Millichamp which had a very thick oval handle and since them he's always gone for it.
The MMi3 he has just has a thicker more oval handle all the way down. He then fiddles with them after a little.
He does know his bats (used to work for Classic Bat co.), asks very good questions about benefits of certain aspects of willow/handles and knows what he wants.