If you're talking just the PNW, cables should more than suffice. Just about all cables manufactured, like the super-Z's are "S" class typically. I personally am good with cables. If they work on our buses on the occasional bad winter, they'll work for my truck. Really, cables/chains only help once the snow is packed. Unlike the east coast, we don't have as much salt to spread and we also don't have even 1/4 the plowing fleet that the midwest and east coast cities have. But then that's why the legend of a west coast car is a very real legend. You may not use chains in Michigan, but you don't have grades like here in the west coast either
Oh the fun on hills. Ah hell, here's another
Portland funPersonally, I'd like to get a set of auto socks and call it good. Works on the same principle as putting thick "Wool" socks over your boot and walking on ice. You'll find that it isn't slippery. However, I don't know if they meet US DOT traction standards. I know they meet European TUV standards for winter traction. Well, it's been a while, but it looks like it's approved in about all PNW states, go here and check it out
Auto Socks. Hopefully they're made in a size for your car.