Umm yeah. I never dunked/sprayed any of my diapers either and Ive never had a problem. I shook whatever would come off ( after solid food started) and then just put the diaper in the wet bag. I do a cold rinse-hotwash-cold rinse washing routine and my diapers never even have poop on them after the first rinse! I always shudder at the thought of dunking and rinsing a diaper!
Maybe I am lazy and maybe this is why some of my diapers are stained, but I never dunk or rinse diapers out. Just scrape of solid that will scrape off into the toilet and toss into a dry pail. The whole spraying a diaper w/ water just seems to spray in other places around the toilet. Never used one though so I could be wrong.