Experiences swimming in ocean water with GW7?

Just wondering if anyone here has regularly swam in ocean water while wearing their GW7? And if so, how long and often have you done it? I'm considering it but am kind of nervous because of the salt water. It would also be a somewhat regular thing 2-3 times a week. I'm okay if this watch dies like a year from now but I don't want it failing in a month because I swam with it.