I don't recall Ford using any of Okrand's Klingon language in his books.
Mike Ford, who wore his hair in a ponytail, was humorously critical of Okrand's "Klingon Dictionary" at the convention where we met. "The Final Reflection" was written before the official dictionary was published.
He had been urged to use Okrand's language for "How Much for Just the Planet?" but complained that while the dictionary had a translation for "ponytail holder" it was missing words for (I think?) "blaster".