It's possible that their 2 stacks aren't as well written as their 1 stacks. (I did notice a focus on manipulation, when IME not all 2s are super manipulative. (Noticing a trend here...)) I like the 1 so/sx description, personally:
The social/sexual One will have the same concerns as the social/self-pres types, however those concerns center more on individuals. Rules aren’t quite as important. They will zero in on what they want to make better and the intensity of their conviction is more obvious. Along with this, they are more personable, somewhat “lighter” and don’t generally take themselves as seriously. They can have a great sense of humor.
On the down side, their sensitivity can cause them to hold grudges. Because the self-pres instinct is last, this subtype could easily be mistaken for other enneatypes. Along with the sexual/social subtype, they can even be somewhat sloppy. Usually, there is still a sense of organization and a desire to do the job right, but there is much less emphasis on perfectionism in the material, physical environment. Most of their focus is on people and society. With this as their focus, they can be quite persuasive when it comes to their chosen causes. On the down side, when this extra outward energy is taken too far, they can approach the world with the attitude that they need to be right at all costs.