Scala has additional considerations going for it with its integration into the JVM ecosystem.

That said, may I observe that the hype seems to have died down for Scala. Everyone I personally know who was into it has dropped it. None of them would have shipped anything into production. Anecdotal, sure, but that's all we ever really have. My guess is that its own complexity is indeed strangling it. Only time will tell, but I'm not sure Scala is really that great an argument.

And, also, for consistency, yes, absolutely, I wouldn't want to suddenly be handed a Scala system to professionally maintain either.