> looks to me like a "2nd system design" for C programmers

That seems fairly accurate.

> I'm hoping that the concurrency model is where it shines

I'd say that channels aren't quite the magic thing they are made out to be and goroutines aren't that amazing. The real win of go for me is three things:

1. Evented runtime with a synchronous interface. "Go is my favorite epoll library"

2. A standard lib that has great http support (things like keepalive and connection pooling and http2)

3. A build and test toolchain that makes coverage and race detection and memory and CPU and lock contention profiling trivial.