I'm not a big fan of turning oak. The smell is fantastic and the grain is always striking, but it can be difficult to get a nice clean cut. And then there is the real problem, the tannin in green oak reacts to the steel of your tools and makes a mess. Not only does it make a mess of your tools, but i always find that you end up with little blue/black marks on your bowl, that may not have been there when you finished turning, but appear gradually as it dries.
The wood is definitely the hero here as shape wise I think that it's pretty boring. My wife says it's her favourite bowl that I've turned though and I'm not allowed to disagree with her.