[Manichean]

You have two options:

1. Use the mentioned tweak and fill the author field with LN, FN like you want to see.
2. Create a custom column as a composite column, using the template {author_sort} (the lookup name needs to be something else, I tested with author_display). Uncheck the authors column if you really don't want to see it. Don't forget to add a plugboard to manage the metadata on device, if you want to see the same thing there.