True! They didn't specify, but I'd been looking at rom the Löwentor-Museum in Stuttgart, posted by Sordes together with his accompanying information. The mega-onychites are inferred to have belonged to the males. My Phragmoteuthis doesn't show them.
Thanks for the clarification and putting me back on the same page by explaining that your determination of female was the absence of the enlargements. It would be curious if the enlarged suckers on some males octopuses have no purpose today and are just throw backs but there must have been some reason for the dimorphistic trait.