Paraphrasing Dr. Ian Malcolm of Jurassic Park: "Yeah, but your chefs were so preoccupied with whether or not they could, they didn't stop to think if they should."
The first thing that comes to my mind when I read the sentence "This looks like someone riding a rollercoaster" is a guy gripping the handlebar for dear life. At least that's how I ride the rollercoaster anyhow.
Dracula never really scared me, I guess it's because I'm usually far, far away from Transylvania. Ditto mummies (never been to Egypt). And werewolves - just stay home locked inside during full moons.
I wonder why the phone itself can't take the video in both format regardless of the way it's being held. There's no "film" that dictate the ultimate format anyhow - so orientation of the phone really shouldn't matter.