What I read dhoyt to say was that he doesn't use any kind of cleaner - soap, oxiclean, pbw - on his equipment. Am I understanding correctly?
I think if you immediately rinse and rinse really really well, it should be fine. As mentioned above, the krausen rings in the carboys/buckets would be the big issue for me, but I suspect intensive rinsing and swirling would work for that, too.
As for your sanitation question, dhoyt, I use idophor and usually fill the vessel i'm sanitizing to three gallons. I use the three gallons to sanitize everything I need for that day, including the vessel - by swirling, pouring, or wiping the portions that are not underwater. Haven't had any problems.