Oder by Name (slug)

Unless I’ve overlooked it, the immensely useful AQL for some reason doesn’t seem to have the option to order posts by Name (slug). This can be really useful in certain situation (e.g. list of persons where post slug = lastname-firstname while post title is Firstname Lastname).
Is there a specific reason to not include it?
I guess there must be a way to add it using some PHP magic, but I’d much prefer doing this in the UI.