I have a couple sets of Lucede (IIRC) chains that are the same design as the RUDD ones shown. Thats the key, make sure you have chains that run both parallel and perpendicular to the tire. That will give you sidehill grip.
They will dig like crazy if you're not careful. Its like a heavy lugged tractor tire.
I find them to be more useful on really packed snow or icy conditions. But they stay in my truck year round (work in mud too!)
Tips:
Bring extra rubber bungees, pinch the S hook down on the side that goes to the bungee, you can use them to tension the chain much better than anything else I have found. Use 2-3 per tire, makes it much nicer to be able to do 20 ish MPH instead of 5.
Put them on at home once. Check Clearance of brake lines, abs wires ETC.