The real question is what quits first in a rainstorm? The photographer or the camera. In my case, probably me.
On a side note, I read the Fujifilm X-T2 (a camera I'm considering switching to for specific workflow reason though I'll give up something in IQ without adding a Fujifilm G camera alongside it no doubt) tropical storm test. While impressive that the camera survived that testing, as a person who's lived through many hurricanes, it's an incredibly stupid test to conduct as it selfishly and needlessly puts the photographer's life in danger along with potentially putting the lives of first responders in danger in the event that they'd have to rescue someone. Just my opinion but hopefully this person won't continue to try to conduct these sorts of tests.