You didn't really ask for this opinion, but studs are technology from the 50s. You're taking the technological marvel of your snow tires and replacing the street contact with steel nubs. Trust me; don't stud them. Good new snow tires will do better on ice that studs will, and you don't have to put up with the noise and dry traction loss.
I've never met anyone who did the switch that didn't completely agree that tires like Blizzaks are far superior to anything with studs