Necro'd... I was digging through old threads and found this. Sorry, Coriolis, that it took me half a year to get back to you.
Sx/Sp errs to the side of death, prioritizing the depth and intensity of the connection over the preservation of the self, and therefore probably is the "darkest" stacking of all. The curious thing about the stackings that I've noticed is that while the secondary instinct supports the primary, it also is brought into stark relief by the primary. In some ways, we may be more consciously abusive towards our secondary instinct because we are more actively discarding it, while the last instinct is often simply passively neglected. We can therefore see the discarding of the self most clearly in Sx/Sp and So/Sp, but in So/Sp's case we as outsiders can understand it better, because we are part of the So landscape. Sx/Sp's choice, however, is so much more isolated from us as observers that it seems much more reckless and nonsensical. I think this is what ultimately gives it the most dramatic, outwardly expressed "darkness" - what is more dark than inexplicable self-destruction? Of course, Sx/Sp's fire also burns the brightest, and they come the closest to Sx's goal of transcending temporal existence, self-immolating into immortality. I think of that Kerouac quote:
Originally Posted by Jack Kerouac, On the Road
Sp/Sx errs to the side of life, while deliberately sacrificing immortality - a close second in terms of darkness. Already insulated from the Social arena, the Sp/Sx further removes themself even from their deepest passions, with the goal of preserving their existence - raising the question, what are you living for? So just as Sx/Sp clings to life in the throes of self-sacrifice, Sp/Sx gives their self away in the smaller moments of daily life, melting into food, drink, comfort, sleep, sex, music, romance. Sp/Sx's darkness is deeper inside. At the same time, the Sp/Sx embodies the Sp wisdom of celebration of life itself, and the Sp/Sx becomes an embodiment of the mystic, the mortal, living, loving, working, striving, ever in communion with immortality.
Those are my thoughts, anywho.