I've seen posts here and elsewhere that seem to indicate that after you print on waterproof paper, even inkjet printing is now protected. That it somehow protects the otherwise water-soluble ink (provided you use a suitable waterproof paper, of course).

Is this true? The paper somehow absorbs the ink and protects it? I could print my contact list and emergency info on the appropriate paper, and don't have to laminate it to protect it from casual water damage (rain, dew, fog, sneezing, etc.)?