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Once I got up and running with sbt, I really took to it. You only need to be concerned about the net when you add a dependency that you want it to resolve by fetching remotely. If you want alternative web frameworks, I think scalatra looks promising.

http://www.playframework.org/ supports Scala too.

I am looking into it and like its Grails-like setup, but its Scala documentation is outdated and I'm not sure how stable Scala support actually is... I will definitely keep an eye on it, and might even dig into the code a little.

You probably want to have a look at this:

http://github.com/guillaumebort/play-scala/blob/master/docum...

Also, when you can life with some Java code that actually isn't very Java like, you can try the normal approach and later enhance with Scala.

They use compile time extension and Groovy in views to get a lot of syntactical sugar going on.

Play may be Scala killer app IMO