Harmony test

Someone in my family heard that the Harmony blood test can identify baby's gender as early as 11 weeks. My MIL has been bugging my DH about finding out early with this test. We already have 3 girls, and honestly I don't care either way this time. I'm already scheduled for nuchal translucency and blood work at 12+3, so I'm guessing I could ask for the Harmony test then (in addition or in lieu of the other blood work) to cut my DH a break. Has any one had experience with the test? Did insurance cover it, or did you pay out of pocket? Did it feel like it was worth it to know gender so early? Just curious... Thanks!