It's not just for boarding though
Hiking, cliff jumping
list goes on
I always pull my phone out to take pics, won't have to do that now it'll be nice
And don't forget, it's also waterproof down to 180'. Though mine's never been past 10'. I also have my iPhone in a Lifeproof housing, which is waterproof down to 7'. It's good for wet snow or rain days, and the occasional drop in a puddle. Or taking pictures snorkeling. Can't really make phone calls underwater (though they do make waterproof headphones for it).