Danny wrote a review of Petzl Ergo Ice Tool on June 27, 2014
Familiarity: I've put it through the wringer
This is a great tool when used what it was designed for. I bought a set of these strictly for dry tooling/mixed climbing, yes I have used them on ice but found the angle is way to extreme and makes swinging very awkward.
If you are looking for a specific tool for anything overhanging these a great. If you are looking for an all around do everything tool stick with the Nomic or Cobra. I find I really only use these when I am screwing around with friends dry tooling.