I've used these bindings exclusively for the past 2 years.
They have seen everything from resort skiing to midwinter tours to spring steeps like the grand teton.
They work pretty well, I have had 3 issues however.
1) I have them mounted such that I am near the back of the adjustment track(so my wife and I can share the same mount) and this can cause snow buildup under the heel. This then compresses into ice and makes it difficult to rotate the heel into downhill mode.
2) I broke the anti rotation pins, ...