I bet that's what most said about his oil-in-the-swingarm idea. I think it could definitely work, just hope he tries it so they'll have something else exhaust-wise to copy. (ex. underslung exhaust)
Exerpt from article: It’s the former that will cause the most brow furrowing, but it shouldn’t. Flexible pipes capable of reliably dealing with extremely high temperatures have been around for years now.