Yeah, I've read his Solo issue, which I think is sort of a mixed bag. The Flash segment borders on incomprehensible and is an example of Scott's worst excesses with his style. It's fun to look at, but it doesn't effectively tell a coherent story.
However, I rather liked the Cass and Steph part, since it was basically a cleaner version of his Batgirl art. His art is pretty good at portraying dynamic action scenes, which I think was an important aspect of the Batgirl series.