New update (Feb 2015) - it's been 3 years and I noticed that one of the heel straps broke off.  Now it was okay at the last usage in 2013-2014 winter season, and because I did not touch it during the off season, I have to assume that the rubber simply gave out from staying on the shoes all that time.  The unit still has one strap and so far it's holding this winter.  (I should point out that my Trax product is like twice as old and I've had no such problem with that.)

Original review(s) below.

I finally got a chance to use this product when we had some morning freezing and I needed to walk down my driveway with the ice on it.  This product appeared to work a little better than my Trax product I've used for the last 3-4 years.

What I liked most:  It seemed to grip the ice better.  It did less damage walking on carpet before stepping outside.  It worked VERY well walking on frozen grassy soil.  It was slightly easier to put on my shoe than my Trax.

What I liked least:  It felt fairly uncomfortable walking on concrete.  My shoes are effectively work shoes like a construction worker might wear, so they are stiff bottomed and are very well sewn.  However, with these cleats on, I could definitely feel the pressure points where the cleats base pushed on my foot here and there.  With the Trax, I did not feel that sort of thing.

While I've never fallen down with the Trax, I have come close a few times.  So I simply wanted to try a different solution.  I'll probably update this review after we've had a serious snowfall and have more experience with it.

Update: We've had a lot of snow this winter, so I've had ample opportunity to use these cleats.  On snow, they are pretty darn good.  When I'm cleaning the driveway, I have not slipped yet.  However, on really slippery ice, when the temperature is near zero, I have noticed I do have to be careful walking on the ice itself, as the cleats will not bite into really hard, frozen ice.  I've not fallen, but the slight sliding has made me nervous a couple of times.  For comparison with the Trax, I *think* the Trax was slightly better on hard, slippery ice.  Bottom line, both work pretty well, and you can't go wrong with either, imo.