BujiWuji

Just in the name of accuracy here, folks, none of the cameras under discussion are specified by their manufacturers to be "weather sealed". They are specified to be "weather resistant". I see folks using the term "weather-sealed", and it's inaccurate terminology.
 
Weather-sealed and "weather-resistant are not the same terms or specifications, at all.  This difference in terminology and, more to the point, engineering specification is important, and the reason its that none of these cameras are warranteed for repair for any ingress of water, water vapor, or moisture.
 
Adzman808's comments that the cause of failure modes resulting from moisture ingress is usually corrosion is also accurate, and can take take weeks or months to develop. Since the spread of corrosion in electronics is insidious, there's no way to repair the camera; and it generally has to be scrapped. This is another reason that manufacturers will not warranty the camera to be weather-sealed or against the ingress of moisture. 

to not use them as protection when you are NOT driving a bike?
 
If you hit the road at even just 25Km an hour with your unprotected head the weaker one is going to break and I predict it is your head .
 
Anyway put your camera under your jacket and nothing will happen to you.
 
Spend as little as $10 buy a raincoat for cameras like the one above and be happy singing in the rain, no need to spend over $1000 more

the search engine is at the top right
 
this is one of the threads dealing with this issue, somewhat, I’ve found it with the search engine.
 
http://www.fuji-x-forum.com/topic/348-x-t1x-t10-and-the-weather-sealing-just-a-gimmick-or-a-must-have-feature/
 
most of us have no real use for the weather sealing but, like so many things, many feel that once it is there , not having it is like missing out on something, even if they will most probably never use it.
 
Perhaps it perceived as a sort of emasculation to not have the best , the top, of anything. I’ve often been rebutted that “ i do it because I can afford it” .
 
I personally wouldn’t make it, unless you are sure to use it, the criterium to buy a camera. WR costs a lot of money as opposed to a camera without that.
 
for pennies one can buy a rain hood