I confirmed with the seller that the 4771-DHE will work with the m97xe and made the switch before shipment, so I'm all good. It's not clear whether the 4771-DHE is made by Pfansteihl or EVG, but I believe that I'm buying a product made by EVG, and it is listed as hyperelliptical, so we'll see how it goes when it arrives. Based on reading other threads, there might be a bit of plastic trimming required to fully seat the stylus into the body. Again, I'll update when it arrives.
It's going to be a busy time for me upcoming, because I just ordered this stylus to see if it will create a Shure m97xe cartridge that can keep a place in my rotation. I also ordered a Chinese AT3600L cheapie to do some experimenting with potting, stylus nuding and crafting a wood cartridge body. Lastly, I ordered a hyperelliptical for an AT95e, so lots of playing and testing coming up in value-hobby-land!