My experience with Scala Play was very different. Scala is an interminably difficult language fraught with pitfalls.
It's much easier to write unreadable Scala code than Groovy.
21 karma · joined January 19, 2015
It's much easier to write unreadable Scala code than Groovy.
It provides fantastic support for concurrency with gpars.
It provides the ability to write static or dynamic code.
It integrates seamlessly with Java.
I feel groovy has created it's own space in the ecosystem, continues to grow and has a bright future.