Here is what Sony says about A99 weather sealing

Nordstjernen wrote:

Well, they did not fire the camera under water ...

My point is that the A99 is not specified to be water sealed. I guess you could pour sand over an A99 and it would work just fine, and you could probably have dipped the camera into water and it would work afterwards. But how many times could you have repeated this beating, and for how long after repeated misuse would the camera work properly?

We don't even know for the Pentax, since they don't say that their cameras are splash proof. Here from the K-5II description (I don't know what the manual says in small print):

"Thanks to the inclusion of 77 special seals in the body, it boasts a dustproof, weather-resistant and cold-resistant construction, assuring reliable operation even under demanding outdoor conditions, and at temperatures as low as -10°C."