The example shows leaving your bucket name in the url as a way to filter out requests to other bucket names. If you want your static site to have http://mysite.com/bucketname/index.html then I guess that's ok. But again, careful configuration and still not for every situation.

I'm sure you can layer more rules to get it exactly right but I'd not be eager to layer on complex configuration through multiple service providers when it is avoidable, unless there is some very compelling overriding reason.