Plastic hydrometer?

NB/Midwest released a polycarbonate hydrometer. I’m curious if it will remain as accurate across various temperatures compared to glass. If I ever have a need from NB, I might throw one in my bag.

I’ve never understood why these weren’t made from plastic before.  I’ve got an old one I got at work that cost a ton.  It works great.  This should be on everyone’s wish list!