I would say Agreeableness would more closely correspond to Keirsey-Berens'
"[Role-]Informative"/(-Directive) --on the Interaction Styles model, and Conscientiousness would correspond to Keirsey's "Cooperative/Pragmatic" on the temperament model. And both factors are based on both J/P and T/F, but switch according to S/N. For S's, Agreebleness is T/F, and Conscientiousness is J/P. But for N's it reverses.
The factor analysis between FFM and MBTI had been done with the MBTI dichotomies, while Keirsey and Berens' cross factors had apparently not been recognized for consideration.
I'll have to read up some more on this. But I think I like it.
SCOAI would correspond to ENFJ. (S=E; O=J; A=F and I=N). But then that is in some ways sort of a mashup between ENFP and ENTJ. It's NF like ENFP, and NJ (and In Charge Interaction style) like ENTJ.
Haha, I think you and I have had a conversation somewhat along these lines, but I'll go for it here anyway since it's relevant. I'm going to come from personal experience with the system and then generalize from there.
I have thought a lot about ENFJ, too. I've certainly heard of ENFJ correlating to (or matching up with) SCOAI, and I've typed as ENFJ, too, especially recently. And taken as pure dichotomies (E/I, S/N.. ), it makes a lot of sense. After all, I came to this board as ESFJ

doh

and "found" ENTJ again.. and now look where I am. And the description of the interaction styles for ENFJ that you gave also matches me to a decent degree.
But then, cognitive functions enter the picture.
Bad. MBTI tells me that I have Extraverted Feeling as a dominant function, which, as a collection of behaviors, is among the functions I care about and exercise the least; however, it does describe my ENFJ friend fairly well. Introverted Feeling suits me much, much better, whereas.. well, he has almost no sense of empathy, which is often attributed to Fi, whatsoever. (But then, he's also pretty neurotic and somewhat unhealthy, so it's likely not an issue of type.)
(That said, I've thought that ENFJ fits me in pretty much every sense except for cognitive function order.. which is a pretty big deal. I'd describe myself as "ENFJ without the Fe" if it didn't make heads explode.

)
And then you get descriptions like
this for the inferior:
Introverted Thinking is least apparent and most enigmatic in this type. In fact, it often appears only when summoned by Feeling. At times only in jest, but in earnest if need be, Thinking entertains as logical only those conclusions which support Feeling's values. Other scenarios can be shown invalid or at best significantly inferior. Such "Thinking in the service of Feeling" has the appearance of logic, but somehow it never quite adds up.
As someone who's studying computer science, I should be failing out of my major.
Which leads to another point.
In this way, in many descriptions, Socionics and MBTI seem to
inhibit personal growth at some level. ENFPs aren't suited to use logic, INTJs can never understand people on a natural level, and so on.
And our type preferences apparently never change, so we're "locked in" to our weaknesses. And, sure, a ENFP can learn Te, but, "Less mature and lacking the polish of higher order functions, Thinking is not well suited to be used as a prominent function."
What?
Or maybe it's my horrible, horrible Ti that can't make sense of these models
Incidentally, I'm quite surprised that F doesn't correlate to Neuroticism.