Jeebus i cant believe the difference siping makes. I was hard-pressed to slide around on my way home, and i really tried. There's a few places on my way home that you can screw around and test these things. The roads in town were mostly compacted, partially melted and refrozen snow and ice. I have to really stomp on the brakes to slide, and really crank the steering at speed to get a slide that way.