I've used it, once for a neipa and once for a barleywine. Did fine in the neipa, but my train book was too convoluted to say anything truly conclusive, I used it at 12%.
For the barleywine I used it at 22% and it seemed to get a bit astringent.
8%, you'll probably be good with it. But, I don't really have any plans to use it any more. I didn't perceive anything terribly unique from it and quick oats are cheaper at the grocery store.
In a simpler recipe than what I used (neither recipe was very good) you might get something interesting from it, but I didn't get it.