Castle ESC's: Water resistant and/or water proof?

[webracer]

Get some liquid tape to be sure. Remove the fan and you have a very water-resistant ESC. I looked into my new Mamba Monster, and it does have conformal coating, but I will probably liquid tape over that. My question to CC is will the liquid tape void my warranty? I understand that failure due to water exposure cannot be warranteed.
I think it is awesome there is the $70 flat fee replacement (even if it gets wet or smashed). Also, CC is in Kansas, so no probs with overseas warranty claims. Someone even answers the phone when you call!