Does anyone have any insight on how "water tight" an IPX8 rating is? I'm investigating a new insulin pump, and all of the ones I'm looking at have a "durability rating" or something. The one I'm particularly interested in (http://www.myomnipod.com/products/section/188) has an IPX8 rating. Now I know a lot of our GPS's have a water tight rating, and that many of us have put that rating to the test. The firehose treatment we can get while on the boat is something that can't quite be measured. If anyone has any experiences with blowing up an IPX8 device while sailing, I'd like to hear it so I can ask the sales rep about it.

Thanks!