I disagree. I know most Go shops I have dealt with at least have looked into gccgo. We use gccgo in the wild (for all our image processing components), because it gave us a nice performance boost. With good testing, you can easily do A/B testing using gccgo to see where it makes sense for you in production.

We have to dig through 30TB of images -- so the performance benefits we got from gccgo were worth the trivial effort it took to implement.