Torrey Pines Logic out of Sandy Eggo has a similar product called the Mirage. It's a handheld device that scans for the signatures characteristic of multi-coated optics. It was 40 grand back in 2010 when I inquired about buying one.
It would be a serious force multiplier worth the time and effort to acquire.
A skilled hobbyist could fabricate one based on technology available off of ebay. It wouldn't be so small, rugged and light but it would still be functional.
Don't think for a minute it ain't on my "ta-doo list"...course seeing as how I'm married that's about 500,000 years out