First off, I like what Athenian has said here, in that for iNtuitive first types, it is absorption then processing. While for Thinking first types, it is the processing first, then the fact absorption.
As an Ne Ti, I usually find myself swimming with inputs, then trying to find a structure that'd make sense of it. It means then FDG's process would only come into play when that structure is formed and the Ti is fixated though, the second stage as Xander says - i.e. I'm becoming more INTP in a sense, in the selection of facts to corroborate or destroy my structure. At this stage, usually the Ne has had enough. Hence the closure and start of fact selection.
A second stage IP/EJ, who has already formed their structure, however, would then be seeking information to corroborate or deny their structure (engaging the Ne more). This creates the appearance of openess, to fit FDG's theory.
But I'd hesitate to say the IP/EJ is truly open - in that, I don't feel they really accept things, but are merely looking for the variety in sample size, then selecting what is of value to prove or deny their theory. Anything which falls inbetween is usually discarded. I think they'd cling more firmly to their beliefs vs an EP/IJ - and this also means the fall is harder for them when a belief is crushed. An EP/IJ would tend to walk away easier I'd think.
To use an example. When meeting a person for a first time, I think an EP/IJ is likely to want to find out more about them, their likes, dislikes, get a handle on their personality, their being. Then they may discover that, oh shites, this person doesn't taste so good. They then start to wonder, hmm, are any of my friends like this, or given their circumstances, is it fair for them to be like that, if so, hmm, maybe it is ok. But after a while, it galls them, and they'd get bored. "I don't like them anymore. Anything you say doesn't change it." And it ends. The death of the Ne kills the relationship.
An IP/EJ, is likely to first wonder. Is this person interesting enough for me to want to find out more, and pique me out of my boredom. Hmm. Ok. This seems interesting. Lets find out more. And they get hooked and want to drain the person dry. When the person is dry, they're likely to shake the bones and go, what, no more? But I liked them. Surfeit of Ne kills it.
So I'd go for EP/IJ as absorbers-reactors. IP/EJs as filters-seekers.