I have no opinion or interest whatsoever in this brand, but I can send my affirmation regarding that zipper; it’s definitely hotter with the zipper.
In fact, if the zipper occurs, you’re looking at a bat hugely below a passing compression threshold. It’s super hot.
And as long as nothing is moving inside the bat, the composite barrel should still be intact and strong enough to keep hitting.
You can surely get 500 or more powerful swings. Home run derby bat perhaps?
However. If an umpire sees it, they’ll throw it out.