I don't want to start an airbag holy war, but think about where you ski. Most of the testing/uses have been in more wide open areas. The evidence so far in those areas is awesome. If you ski somewhere like the Wasatch, 60% of our deaths are trauma related. Surfing on top could possibly be worse in high consequence ranges.
Just something to think about. There is no conclusive evidence out there that airbags hurt in high trauma related areas.