I'm running X-Ice 2 as well, but on 15s. Excellent tire and quieter than stock. I really had to try hard to lose traction in fresh snow. Acceleration in 2nd was no slower than on dry pavement.
A RWD Pathfinder did a 270 in front of me on a very gentle slope. He drove 20 MPH the rest of the way home, ruining my fun.