Just laid the last coat. LESS fogging, but it's still there. Honestly I think you're right, and I'm an idiot and should've read the can, and it needs clear to make it look the way it's supposed to. It was gonna get clear anyway, but I wasn't expecting it to look like this. Anyway, we'll know tomorrow when I try to clear it.
EDIT: Or should I wait less time before I clear it?
EDIT: a sort-of on-topic question, as well. I tried spraying a model with an old can of Dupli-color gray primer a few days ago, and despite a full minute of shaking, it came out rather watery and separated. Does this happen to paint/primer with age, even in spraycans? Would certainly explain it, if so...