Use the Play framework or stick with J2EE / Spring / Hibernate?
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At my current place of work, we're considering using the 'Play' framework for our next project. I'm actually an advocate for sticking with the 'devil we know' (J2EE / Spring / Hibernate) but I'm rapidly losing faith due to the technical pot-holes in that tech-stack. 

I dread to think of the unknown pitfalls awaiting us in the all-new Play framework. I'd really appreciate feedback from anyone who is a *veteran* J2EE / Spring / Servlet / ORM engineer who has experience using Play. How does it compare? What are the major booby-traps awaiting us? 

If you're a newbie web hacker who's infinitely optimistic about 'Play', yet utterly naive about real-world software development and maintenance, I don't need your input thanks! ;-)