No, Mack initially pitched a Twisted Immelmann which is a slightly different element. It would’ve been effective at the originally pitched faster launch speeds as it would have created strong airtime. Originally the train didn’t invert at all and was fully upright at the apex of the element. The original layout still had just two inversions however, as the inclined loop was an inversion rather than the “banked turn” it became.
When the launch speeds were decreased, a more standard Immelmann made sense. It is definitely an inversion now, even if it does start to rotate the train just before the apex, rider’s heads will be well below their feet.