Playing through the game, I do find both cool yet unfortunate that some scenes change depending on your sex expertise. For instance, without an expert(maybe experienced) rating in ass, you get a failed double penetration attempt for the corrupted warrior lizard. While trying to increase my last experience to expertise, I found that the two warriors at the waterfall interaction is no longer available and is replaced by a work in progress one. Although I have a save from before to use, I just find it a bit bothersome that I can't just choose to go with the other result.