It's not. It's a new Java, not a new C++.

> ie: hard to bind other languages to it through an FFI.

More or less impossible: GC and goroutines are not optional so you'd need to cleanly setup and shutdown the Go runtime. You'd have to embed Go as you do Lua or Python.

http://golang.org/cmd/cgo/

Go has absurdly simple FFI through, as mratzloff mentioned, C. This is self-promotion and apologies, but see my submission history for two examples.