I always just set up a project myself using Werkzeug, in the era of WSGI, almost all of the heavy lifting for web apps is done automatically and outside of your application anyway.
We do for as many apps as possible. The async / callback structure is far easier for our developers to understand over Javascript/Node. Tornado is significantly different from other Python frameworks like Django and Flask, but IMHO it is under appreciated.
Is it great for a production environment? No clue. Same with Tornado. But it's definitely a solid pick.