When I drop the air pressure down to about 30 PSI, like i did yesterday, I can get really nice bite from the studs. Even in 4-6" deep ice ruts that we have at some of the intersections, the tires hold their course for the most part. Pump them up to 45 PSI, and the studs almost don't touch the surface for when the roads are clear.
Now they're aren't overly large tires, which makes deep fresh powder a challenge for them, but for commute type riding, and running errands on city streets, these are an excellent tire.
It feels good to be back riding in traffic again, and not worrying about losing traction. Lots of looks of amazement (or insanity) from the motorists.
Ride yer bike.