I think these will have a limited but important role in certain fields. Any occupation where you have to wear eye protection anyhow, and can use the magnifications, may be potentially assisted. Indoors, one can generally throw more light at the problem. Increasing lighting by a factor of four to account for two stops of loss is mostly a cooling problem, though it may be uncomfortable for anyone NOT wearing shaded goggles. With the touch of a button (which may or may not be attached to the eye protection itself), one could magnify the work area. I wouldn't be surprised if gem cutting and appraisal see this technology adopted pretty quickly.
Where these WON'T be so useful is outdoors in uncontrolled conditions, where you have little control over the light level, and the polarizing lenses are an extra piece of hardware you might not otherwise need (and the polarization is not always a good thing, it can make glare WORSE if it's rotated wrong). Even there, they may prove useful in certain niches -- it's not at all unusual to wear sunglasses at the beach, and nobody would see the contacts behind them. Still, the worst someone can do with them is gawk from a distance, since they aren't cameras. They can ALREADY be long-distance lechers, this just makes it less obvious.