I wouldn't be surprised if a few do. Think of how much time you're spending on improv right now, for example. I think a lot of improvisers go through a period where they're easily spending 15-20 hours a week on it. Maybe not for ten years, but... and then a fade to more like 10 hours a week. I think there is a large number of improvisers in Seattle who are doing 10+ hours a week, between rehearsals and performances. I know I was pretty easily topping that while rehearsing CIU and Interrobang/performing Quiz Show. And when you look at some of the vets at UP, in particular, the theater is operating so many nights a week that topping 10 hours in a week gets pretty easy. (And I'd include teaching improv as part of the 10,000 hours, but maybe it shouldn't be included, since it's a slightly different skillset.) So... I don't find it hard to imagine that there are a few more than just Randy. But yeah, not many.