hi, have a look at apollonius dysc on pronouns and whatever commentary there is on this. i remember reading in there a ref to the acc sg of this pronoun as an enclitic, which would be relevant to its consideration as postpositive (remove spaces, pdf page 18 bottom, section number 26):
schmidhauser . us / docs / apollonius-sources / pronouns . pdf
a commentator on this section might cover the question you posed above, and in addition check out dover on word order if you haven't already... i can't remember if dover covers all non-nom uses of this pronoun at the end of a clause or only τοῦτο at the end of a clause before a ὅτι-type explanatory clause (or even if dover covers this use... my copy is back in aust)... does will or someone have a copy nearby to check this? thanks
