I think so. I haven't tried out BoilingOil's Plan Maternity Wear yet (because I haven't wanted to try and find Squinge's mod again, really). I have plenty of clothes that are either properly enabled as maternity, or if they aren't but have pregmorphs, I know how to do it myself (even if I wasn't sitting and staring at your guide for reference numbers, lol). Mostly what I'd love to find is a Plan Maternity Outfit mod that could actually set the maternity outfit without being reliant on Pregnant Sims Wear Any Outfit. So, I was mostly asking in case you had something like that. ;)