I asume they are, but what would be the grade of it? Can they only stand sweat or can I actally wear them in the shower?
Yep, IP67. Resistant to sweat/splashing and a quick dunk.
I mean, why would you wear an expensive electronic device in the shower, even if you can? In the very, very slightest of chances that water does get inside, it's broken.
I mean, working for T-Mobile, I saw an account once where one of the lines ...
If they made a deal with Casio to make a G-Shock version that is actually waterproof and durable, it might be a worthy watch replacement.