I don't know if I'm typical or not, but here's my stance on .pdf and print.
Physical books are reading copies, and .pdfs are working copies. I use the pdf of an advenutre to print out maps and relevant creature stats for use at the game table (I do not have a laptop). I can then write on them, change them, and whatnot without messing up my printed copy. I can also print out pictures or players maps for player use without ripping my printed book or having to make photcopies. I can select text to give to the players in another document. If I'm simply reading an adventure, I do it in print form because it's easier on my eyes.
I downloaded the free Exalted RPG book. I gave it a brief look through and will likely read the first two chapters on line. If I like what I see, I will buy the print book because I ceratinly don't want to read 400-ish pages on a computer screen.
Bottom line is, owning a pdf has no bearing for me on whether or not I'll own the physical copy. To me, .pdf is a wonderful way to preview stuff and to use as a working document, but print is my preferred medium for reading.
I've got a similar view. I downloaded Exalted, and if I like it, I'll probably buy the print book, as well as items that support it. I might also buy the pdfs at some point- with WotC's I regularly bought both- but really, all of these actions have only made it more likely that I'll use my local gaming store.