The results came out not-infp probably because I've taken this test a few times already rather than from being not-infp. That said, I don't know or stay in contact with any e4s or infps who aren't relatives, as either I find their expressiveness tiresome or they give me the impression that I loom over as some frothing, paranoid threat.
e54 infps (specifically so/sp variant) have their nerves exposed, so every nuance, flinch, every shaky (imagine your eyes floating like fog from your physical head) glance; every damn action magnified. Either side either realizes or strongly respects how, where, and why the other values their energy and time spent. We're your ghosts of the enneagram.
e54 intps, on the other hand, are more reactive and self-indulgent, proceeding with plans simply for the mental stimulation, whereas we're more apt to examine a plan, formed opinion or idea for the longest time, silently marveling over its design, hence aren't as busied, concerned with direct application than experiencing and savoring psychological changes (I hesitate to say highly condensed feelings - or whether the savoring process itself is our entire Si harddrive taking the required time to rewire itself or not) that might accompany reaching such a conclusion.
So the restlessness, the liquid compulsiveness through which I sniff out novelty are, more than anything else, side effects of a particularly reflective Fi (also likely to be applicable to the e56::e54 shared experience, regarding Ti), maybe maintaining closer contact with inferior functions, but I've never completely bought into absolute order. I'd like to see genetics linked to typology to fractal geometry to every second pattern or internal, fleeting gesture that can't already be succinctly applied to words sometime.