I guess the bulk of what i'd be testing would be can someone consciously seek trigger words and dip at a photoflipping pace WHILE letting the other than conscious mind continue to familiarize itself with the text.
My theory is we get some conscious material in there, some other than conscious material in there, there's some similarities, BAM! neural pathways start shaking hands like old friends, popping champagne bottles or what have you.
Even so, I agree with you that I should probably do more non-dipping photoflip passes before I try the dipping stuff...it'll only take like 15 more seconds, and it'll probably be worth it.
Keeping my eye out for the test subject, though I'm eyeing that "Neverending Story" paperback I bought at a sale and never got to check out. "Neverending Story", eh? We'll just see about THAT. 
-Ramon http://razor.ramon.com