Rode my DIY studded tire on ice for the first time today.
Wow, they really hook up. Unbelievable! It was a little unnerving at first but when I got the hang of it (got over the fear of slipping) it was like riding on dry ground. I actually had to check what I was riding on was ice after all, but sure enough it was!
My tire is a IRC Mythos and I used 192 self-starting screws. I didn't have a studded tire on the back (I'm riding a fixie) but I didn't think I really needed one.
Anyway, the sun melted most of the ice on the road later on but I did get a taste of ice riding. What fun!