Where I live it seldom rains so since the orings keep the lube in the rollers I don't use chain lube any more. No rust issues. I do use wd 40 to keep the orings from drying out and clean the chain. After lubing following a ride and wiping off, it seems to do well. My neighbor turned me on to this and he gets 30k out of his chains. I is low humidity here as well. (S. Cal)
Just my .02 worth.