I'm just across the border from you in E Washington. I used to run studs until the the 'all seasons" came out. I even have a full mounted set for a car I bought back in the 90s that have never been on the road. The only place studs are better is on ice and I just don't drive in those conditions.
Studs improve traction in all driving condions except dry roads. Better in snow, ice, or even rain. They also imbalance the tire, make more noise, and tear up the roads. I put balancing beads in my tires, so that is pretty much taken care of. Noise I can live with, and I don't wear out the roads except when it is covered with snow or ice. I can swap my tires in short order.