Ok, thanks. Looking at the commit where this directive was added:
```diff
+.. versionchanged:: 1.5
+
 All of the cautions in the note for the :meth:`defer` documentation apply to
 ``only()`` as well. Use it cautiously and only after exhausting your other
-options.
+options. Also note that using :meth:`only` and omitting a field requested
+using :meth:`select_related` is an error as well.
```
I see that the change here is that now an error is raised in that case. So maybe I should change it to this?:
```
All of the cautions in the note for the :meth:`defer` documentation apply to
``only()`` as well. Use it cautiously and only after exhausting your other
options.

..versionchanged:: 1.5

    Now an error is raised when using :meth:`only` and omitting a field requested
    using :meth:`select_related`
```