I wish they hadn't gone with J for judging and P for perceiving in MBTI. It just doesn't correlate to that except to show a function order. I guess it's hard to put meaning to it though without having a descriptive label like judging vs perceiving, but the whole J is a judger and likes to make lists and create structure, whereas P is better able to go with the flow, is more than a bit oversimplified. If my Fi is sparked I see no reason to believe I couldn't Se procrastinate my way through something while formulating smart quick plans.
But then again Socionics considers Ni, Si, Se, and Ne to be data gathering functions (and I believe it makes more sense to say this than MBTI); Ti, Fi, Te, Fe are action filters. In this way anyone dominate in Ni, Si, Se, or Ne are perceivers (hence the J/P switch with introverts).
But I also wonder if that really makes much more sense since you can look at an ENTJ for instance and see that they are using Te actions first and foremost with Ni to back it up. I would gather an ENTJ might be a better procrastinator in this regard than an ESTP that focuses more on taking in the interactions of their environment and then acting on them by reaching structured judgments about what's going on. It really becomes a question of which is more successful in their dealings with their world. The one that is more successful will be deemed a better perceiver, I suppose.
In retrospect, I hate how it is so hard for me to convince myself of anything.
Edit: I suppose the more I think about typology, the more I realize the intuiting preference in people probably does deserve the often attached connotation of 'visionary'.