I don't know if there are any Romeo solos without some tapping in them...that is kind of his trademark stamp so to speak. I don't recall any in the show I saw. In any of his given solos there are certainly a lot of really difficult alternate or sweeping passages though. Having seen him live on the Odyssey tour, I would say that the Smoke and Mirrors solo looks like a beast to me with so many techniques employed at such insane speeds.