Sorry, no DSLR harness info, but you can avoid breaking ribs in that kinda fall only by 1/being 9 years old again when you can bounce more easily or 2/dressing up like Michelin Man. Downhill or Nordic? I only know downhill skiing in the west.
But: I detached all my ribs in a minor bike fall just a few years ago @age 57. Long recovery. East coast snow is more like concrete than not, and falling downhill on skis not unlike falling off a bike. I'd hate to hit the slope face first with a big camera against my sternum. I might be more inclined to trust my legs with the skiing, pack my poles in a backpack until needed, and carry a camera on a wrist strap, especially if my ribs were more important than the cam. but then I'd also be shooting a smaller cam....
Good luck be safe have fun!