As long as the pages are loaded, it's fine.I do the same and have done for a while now.
For example I use the Project Gutenberg site a lot: http://www.gutenberg.org/
One book I have "photoread" (not read) is 'How to Speak and Write Correctly, by Joseph Devlin' which can be found here: http://www.gutenberg.org/dirs/etext04/hwswc10h.htm
Now how I photoread that was to simply let the page fully load, then I held onto the blue sidebar and dragged it down.That means that I PR the whole thing in a matter of a couple of seconds or so.If you feel more comfortable going a bit slowly, then take about 10 seconds if you wish.
Anyway I have definitely seen improvements in my wording style, so I know that the PR'ing (even at that speed) was beneficial and worked just as good as one second per page.
Often I would find myself typing something, and then thinking to myself "this doesn't sound right, the way I have worded it."
So I would reference the book and consciously see what the right wording is.Lo and behold I was using the right wording, but because it was new to me I questioned it.Really this is a perfect example, to me at least, that letting go and trusting that it works is the key.Direct learning definitely has value.
There is a recent topic regarding this that I posted on here a few weeks ago: http://www.learningstrategies.com/forum/ubb/Forum8/HTML/005401.html
Alex's reply is interesting.
PS: Photoread 'War and Peace' in just a few seconds: http://www.gutenberg.org/dirs/etext01/wrnpc11.txt
Hey what's a few seconds? Might as well just do it!
This is why PC photoreading so interests me and why there's definitely a market for some kind of software specifically aimed at photoreaders.It beats flipping thousands of pages if you ask me.
Cheers!