I have a couple of LensCoat rain sleeves; a smaller one for camera and regular lens and a large one for when I use a super telephoto.
A corollary to this post might also be "What to do when your electronics get wet."
You alluded to some of these points in your post snow-bomb example.
Please indulge me while I share a story:
My sister and I were trekking in Uganda with our friend Harry, looking but not finding chimpanzees in the wild. A guide was required.
We reached a jungle stream with only a log to get across. Our pygmy ranger in his tall rubber boots led the way across the wet log and reached back to help our friend Harry. Somehow, Harry slipped and went down on all fours into the creek and our little ranger ended up nearly riding Harry, straddling him. We laughed so hard, we were crying; until Harry pulled his Motorola phone out of his pocket. No phone stores there. Oops. But Harry is a savvy guy and saved his phone and taught me a few pointers.
WHAT TO DO WHEN YOUR ELECTRONICS GET WET (please feel free to add more ideas here)
1. Immediate battery yank. If you can, pop the battery out quickly.
2. Put unit in a bag of rice for several days. Open SD card, battery compartments, etc.
I've also had luck setting a dunked Canon G10 in front of a blow drier for several hours. Eventually fogged screens cleared and the camera worked three days later when I gingerly popped the battery back in and fired it up.
06 Tundra AC TRD 4x4, 08 Hawk, Ride-Rite bags, Helweg sway bar,18" BFG AT's
2021 RAM 3500 Crew 4x4, 6.4 hemi/8 speed trans with 4.10 gears, Timber Grove bags, Falken Wildpeak 35" tires
2008 FWC Hawk with victron DC-DC charger, 130w solar, MPPT controler