I have one of the rings that is the black with a slight wood look..
It's my emergency backup since I always wear the ring.
The only negative, which really isn't that negative since it's an emergency key, is that I basically need to slide it off and put it on the pillar of the car for the car to see it. (it has to see a loop, so just knuckleing it doesn't work)
So if you always wear the ring and not think about it, and like the look, they're just fine.
It's my emergency backup since I always wear the ring.
The only negative, which really isn't that negative since it's an emergency key, is that I basically need to slide it off and put it on the pillar of the car for the car to see it. (it has to see a loop, so just knuckleing it doesn't work)
So if you always wear the ring and not think about it, and like the look, they're just fine.