Generating similar high quality docs for the Pythonic wrapper should not be a issue.
Isn't the point that you don't have to translate in your head all the time. For non-Pythonic, non pep8 code you are going to do that constantly, not only when you read the Qt docs.
pep8 is a subset of 'Pythonic', the current wrappers are not only not pep8 compliant, they are also un-Pythonic in other ways.
Don't get me wrong, I appreciate Qt trying to expand their user base, but I would consider this effort a early milestone on the road to something that really fits into the Python ecosystem.