The personalities are explicitly made for 3 playstyle paths with roleplay of the playstyles integrated into the personalities. The succubus thing is there mostly to allow for the ability to deal any actual damage with the primary Nympho stat. You also do have the option of in-between playstyles depending on your stat spreads and gear choices, with the personalities just ensuring that certain traits that would make no sense with the personality don't end up conflicting. A Nympho who mostly engages in sex is unlikely to be trained in warfare, plus access to high quality weapons would make the Nympho-based combat options useless as there would no point in ever using Juicing over shooting with a bow in the backline. Instead, it encourages either more creative mix-and-match stat spreads or playing smart to find out ways to do what you want in indirect ways. Remember: you technically don't have to fight anything to get 20 gold so non-combat paths are a viable option even if that ends up really boring compared to being a fighter adventurer.
For example, you can be a hybrid support-paladin via Combat and Constitution hybrid stat lineup using a high quality weapon with an offhand Relic of the Guardian (put down the banner as a frontline commander with allies) or a Deep One rebirth Lona is able to do a Mage Nympho thanks to unlocking Water Shot without needing Mana Knowledge (so no need for Timid trait). The restrictions seem hyper restrictive at first, until you find out more options that aren't directly told from the start and realize that they aren't nearly as restrictive as they seem.
