Miller and Scroggins were definately throwing the new Storm Virtual Gravity, it had the bright orange swirl. They both looked fairly shiny, and it's likely it was either lane shine or it was just polished.
Scroggins is a free agent, he can throw whatever he wants. He usually throws a mix of Storm/Rotogrip equipment. And for the record, Storm staffers only throw Storm, and Rotogrip staffers throw only Rotogrip. They treat them as independent companies.