Underwater (waterproof at least) Servo, Anybody Tried it Yet

Hey folks, looks like Hobbyking has underwater servos…

Does anybody have any experience with them yet?

Might order a few to test out.

please let us know if they work at depth.
Have had them in a few cars and they work good but never underwater at depth
I still put them inside of balloons to waterproof them
I would like to see a high torque version of these