Yes, that's true. I haven't heard too many reports on ice, and for myself, I've only driven them in snow a few times, and not really on ice yet. I have to say, however, that the tread compound seems a little softer (could potentially wear a bit quicker) than most of the other comparables. Plus it seems to have decent siping, although I guess one could add more... That would theoretically help in ice. I have to say as well, that they kept me out of an accident on a very slippery hill the other day (it was raining and the road was very slick with oil from no rain in the last 5 weeks). A car stopped short in front of me, and I skidded very slightly to avoid, and the tires grabbed like a mofo. I couldn't believe how well they handled in an emergency situation like that. So far I'm very pleased compared to my old BFG's and more recently the Geolanders.
Here's a pic: