Vector data not showing on video overlay either. Also, I cant pair my Garmin Edge 510 with the VIRB as advertised either.:(
I think I've read in these forums that's going to be in a near future update of the 510. For what it's worth, it's already available for Fenix and it works. But all you can do with Fenix is turn the VIRB to "record" or "stop". Useful if it's out of sight somewhere (helmet or head mounted), not so useful if it's on your handlebars next to your 510.