the so/sx version is what I call lightside (soc as unquestioned dictator, just as in warmside so/sp), and on the other end is the darkside (soc as chairman, sx as vice chairman who sleeps with the chairman). and the midrange, that lovely muddy area in between where soc is the boss but sx at least has its own corner office.
lightsiders vs darksiders is almost like a phobic/counterphobic split in attitude. the lightside is engaging, ingratiating even, and is the closest to what has become the stereotype for so/sx. unmistakably friendly, amusing, eager to attend to others in a personal, customized way. also hesitant or unwilling to upset the delicate chemistry or harmony of individual or group dynamics, since soc cohesion is at a premium. some famous lightsiders: mister rogers, steve carrell, george foreman, ben affleck, zach braff, michael jackson, and bill clinton.
darksiders on the other hand seem eager to prove their soc isn't in full control, so they typically test the boundaries of traditional soc values. maybe knee-jerk reactions against sheepish herd behavior, group mentalities, or warmside strategies for making connections. they aren't any less healthy by definition, but can seem that way due to their darker, more confrontational manner. they use highly customized interactive tactics like all so/sx's, but in a more uncompromising "keeping it real" way, owing to the active tension between "good" soc and "bad" sx. some examples are woody harrelson, frank zappa, jack nicholson, lauryn hill, judy garland, chris rock, eminem, george carlin, andy warhol.
midrange so/sx's have a less pre-committed way of dealing with people, and therefore seem to express the mercurial qualities of the so/sx nature more than the others. I used to call it the "grey" range since it made me think of dusky unreadability, or manipulation through inscrutability. midrange so/sx's seem especially averse to being predictable, preferring the license to adapt whatever attitude the situation requires. until those conditions are clear they default to a kind of seeming indifference or nonchalance (a stark contrast to the sociably upfront quality of their cordial so/sp cousins). some examples of this pliant, laid back range of so/sx are hugh laurie, gene simmons, brad pitt, howard stern, hugh grant, shaquille o'neal, and garfield the cat.