Garmin Vector Air- Aerodynamic sensors go mainstream?

Consumer aerodynamic sensors have been just around the corner for a few years. But it looks like Garmin is about to launch something. What are people thinking, will this be the real thing or yet another false start?

I would be very keen to get one for time trialing to perfect my position. Also testing helmets, gloves etc.
And being able to swap to my road bike would be beneficial

$300 US around $450 Aud

I’d get one if it proved accurate - even just for fine tuning road bike position