True. I haven't played with Go, but the reason I like Scala (slow compiler and somewhat lacklustre tooling aside) is precisely because I have a lot of time and brainpower invested in JVM-based stuff. If and when I need a wicked fast systems programming language, I think Go might be on the agenda.
Scala is certainly the more researchy language with an advanced type system, better type inference, and multi-paradigm. However, its compilation is horribly slow, programming styles vary wildly, and I find its tools e.g., SBT, to be underdeveloped.
On the other hand, Go has constrained features and complexity, while providing higher-level features like GC, first-class functions, and simple type-inference, along with excellent tools e.g., gofmt and the build system.
I don't want to imply that one is simply better than the other, but I have enjoyed working in Go much more than Scala.