The comparison here is with go.

Unwrap would look like:

    file := os.Open("foo").Unwrap()

I'll take that over the current go state of the art:

    file, err := os.Open("foo")
    if err != nil {
        panic(err)
    }

Just like "panic(err)" is used infrequently, "unwrap" would be used infrequently. They're comparable, and for the cases where unwrap is okay (test code, once-off scripts, etc), I'd definitely prefer it to the panic boilerplate.