I've been distracted into thinking about this lately. I've read several threads about so/sx vs so/sp. I believe I'm so/sp.
sp-dom 4 is described as tough, independent, and reckless (or, self-indulgent and picky). I am wondering if the dauntless quality comes through in so/sp variants in a way which differentiates from so/sx. Anecdotally, I have known a couple definite social 4's who I think are so/sx. The big difference between myself and them is they are quite a bit more light-footed and have a distinct flirty quality. I have something underneath the self-conscious so4ness that is definitely harder-edged, stubborn and relates to the dauntless, self-loathing aspect. It says "don't f*** with me", where the sx-second coos, "f*** with me, just a little bit, so I know I'm affecting you".
My so/sx's get a little lazy and detached when stressed, eating and getting high. I tend to eat very little when stressed and go on impromptu expeditions that often involve me getting into hairy physical situations. I guess I am attracted to the idea of myself as a tough guy who can operate at physical/situational extremes.
To use the logic that the second instinct is used to further the interests of the first, I'd posit:
4 so/sp attempts to use dauntless behavior to achieve social image, ie "I'm the tough, slightly psycho one in this group, watch me do something risky or difficult"
4 so/sx attempts to use seductive/relational talents to achieve social image, ie "I'm the desirable minx in this group, see how much fun you're gonna have with me"
Any thoughts or examples for or against? (Realizing that not all sp 4s are dauntless.)