I've dealt with ice on the windshield at home in the morning. Only once I was leaving work at night, and the windshield was frozen over with no hose anywhere near. I was drinking a bottle of water. I started pouring that on the windshield. I guess I got enough ice removed to drive home.

I recommend a good pair of hankook all weathers instead of playing the winter tire summer tire game. Just use chains if the roads are going to be that bad