I find Go akin to C ; it's really fast to pick up, I can use it without internet if I have to, it has enough functionality and enough stable libraries for me not really to have to bother with the latest and the greatest of everything like in the javascript world.

I use it when I cannot use CL (for basically everything) or Racket (language / code generation), which basically means 'if my clients doesn't accept the above'.

For web/desktop/backend CL and Go are both incredibly productive. CL for me is more productive, mostly because the effortless starting, far more expressive (do a lot with very little code), better repl, debugging, save and die etc. Single binaries are great about both and so is lightning fast compilation.

I guess I have two hammers; one of them has a more comfortable handle for whacking in those slightly more difficult nails.

Lately I cheat by using a subset of CL and generating the Go code.