While this concept has some advantages, like (at least the possibility of) a bigger field of vision compared to conventional HUDs, keeping the "headworn hardware" operative in an airline environment with 8+ landings a day and multiple crew changes is a challenge.
Given the economic climate I'd imagine this not to become a huge seller despite the advantages, as many operators don't buy anything that's not required by regulation unless there is a solid economical advantage (e.g. improved minima in places where lots of diversions might result without).
At least for EVS we'll be able to judge fleet permeation by looking for those telltale bulges on ATR noses.
