I like them a lot. They simply fixed what was wrong with existing ones. Teams across sportsdom could learn a thing..
Side by side much cleaner. Almost too much, though. May end up just looking like a long sleeve t-shirt.
The "reason" is that piping sucks. Keep in mind this is just the jersey. The britches will add a bit more complexity..
without the piping the older one is better looks goofy as hell where its placed, at least they got that right on the new design...