I was surprised by the eas of the connection and also loud sound when I am trying to find it and the fact that you can stop the ringing by pressing the button on the tag. I would really like to have a functionality to remind me that I left behind the tag. And for example to be able to set it per tag. I hope that it is just a SW and Google is working on it.
It's great that it has a hole, so you do not need another accessory to put it on key ring.
The network of devices supporting this standard is still very broad-meshed. In many cases I'm not able to do a localization - even in very crowded areas. But this may change soon.