I remember seeing something about this on an HBO Real Sex episode a few years back. They interviewed a retired female Pornstar (one that had been really big in the 70s/80s, sorry can't recall her name) who had turned to directing ad was producing stuff for female audiences. The project was under the wing of some major player in the industry (might have been VCA) and she was shooting full time.
Along with a more romantic and relatable/real-life take on the sex (the scene she was shooting while being interviewed was an attractive couple stuck in an elevator scenario), her contention was that the product without $shots would have been more appealing for the growing market of female consumers who demonstrated (according to her) no appeal for money-shots.
So the grinding was basically the same as in more romantic-type product but the cumshot was either internal (no dripping of course) or swallowed.
Don't know if this helps, especially because I have never seen such product in either pornoshops or the net, but I thought it was worth mentioning...
Good luck with it
