I haven't used SLIF personally in a while, but you're right, if I remember right it overwrote SLH_fctBodyShape with it's own version.   Additionally, that addon is VERY outdated. It's from December 2018, which means, even in a best-case scenario, it's based on Hormones 2.0.x (if I recall it's hormones 2.0.7 or 2.0.8).   So for anyone trying to use SLIF and Hormones (regardless of LE or SE), they shouldn't use the old SLIF addon (the newer JSON-based one is probably fine for a