Hmmm...I can get cx tires for $10/each plus $5 for screws. I have tire clearance issues (38's are about the tallest I can go), so that may be an issue. Problem with going with the Innovas is that for $5-10 more each, I can have an equivalently-studded Nokian which lasts 3x as long .
I can do all but a 1/2 mile of my commute on bike paths (it makes it almost 1/3 longer, but it's better than being hit by a car), but last night, on the way to Target, the roads were attrocious. Needless to say, I was wishing for something better than even mud tires (I was limping along on my Mt bike). Well, if anyone has any more thoughts on CX tires, let me know.