I'm a big fan of rings; I think they are a great accessory but, I'm also a fan of technology, and I love when the two get combined into one thing. I think it is a way better alternative than those implants and, I'm looking forward to more similar devices that push the innovation into this space even forward.
Keep on hunting.
Personally, I think implants are closer than we think. If you can get enough tech inside the size of a ring the implant footprint is getting smaller.
But a ring will be much easier to take off, when you want to disconnect from the world.