I actually just ordered some emergency tire chains from that same site! I debated getting full-on chains but for now I don't really need them. The emergency ones consist of a pair of 2-chain units that you can strap on for instant traction. That's more what I end up needing (a burst of traction to get out of a bad parking lot or side street).
_________________________
“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman