Second, slightly more successful attempt at bending HDRP's hair shader for mane and tail use. Still too transparent under some camera angle, and look more "fuzzy mane" than a well groomed one ... so I'm not sure if I will use it for now.
It also made me realize I would need to find/make a proper tail dock.
About Djthed's models release :
I tried. Sadly they *really* are designed around a lot of Blender-only features. I will have to wait until someone with advanced Blender experience clean them up a bit. I will however use the horn model he made, which is far better looking than the default SFM one (or even the handful of custom horns publicly available).