I was in Sandusky this past weekend tending to wedding planning, and did stop by Shoreline Park to check out some of Valravn's testing.
The view from across the bay is a bit obstructed, as Valravn's drop faces directly north. However, I was able to watch the train come out of the Immelmann, and run the second half of the course. They were testing with a full MCBR stop, which should be more akin to the final ride experience. Even still, at a distance, the second drop and immelmann appeared to be a good pace, while the barrel roll looked to feature some hangtime.