Thanks, Joe, and you’re right. To be clear, I haven’t seen the paper myself (I was nowhere near a library when I made that recommendation). But my guess is that the article first discusses the general background of W.’s law in Latin, which is what my correspondent asked about, before pointing to how other postpositives (e.g. verum, tamen, etc.) might force the personal pronouns into other (nearby) places in the sentence. You definitely see this in action in Plautus. The question — again, to guess — is which of these various particles exerts more influence over the law than vice versa.

But I fully endorse your irony!