I think the Alpha version is somewhat unattractive compared to the regular version. As someone who only wants to unlock their phone and for whom security is much less of a concern, I'd like a version with a single chip and a stronger signal. My understanding is that the use of metal in the ring is also attenuating the signal to some extent. I'd be interested in a ring produced using different materials.
I don't want to have to use a sweet spot. I want to be able to pick up my phone in any way I like and have the phone unlock.