Maybe I am old-fashioned, but declaration of member variables in like in the second example makes me afraid. :-) Whats that for a language btw?
C# 6 also copied it (although it doesn't really look that clean, because of their incompatible mess in fields vs. methods vs. properties).
In hindsight, Scala is much smaller than C#, F#, C++, OCaml, etc. while still being more expressive and comfortable to use.