Having known OCaml since Caml Light days, Go's type system has nothing to do with OCaml, it is exactly the kind of languages the Go community rants about.
Yeah I don't think the Go community would like OCaml very much. But I do think there are some similarities, in that they both have great compile times, as a functional language OCaml is quite simple, they are both GC'd systems languages and both have predictable runtimes. So if you appreciate a lot of ideas in Go, but find them too conservative and the error handling too tedious, OCaml might be a good choice.