It’s an interesting form factor and seems to produce decent images for the money. For me, though, it completely fails as a helmet cam or for other action activities. Go Pro’s Hero succeeds a bit more there- they use them for motorsports and even suggest mounting it inside the grille of your car on track days…
That said, for documenting what the kids are up to? Seems pretty darn slick, though removable memory would make a lot of sense for some folks (especially on extended Holidays)…