cylonIt'd fit in a roomy wallet, but I think it's too thick for an EZGO.
It has a hole for a cord and it's very light, just like an actual dogtag, so it's easy to carry. Since it doesn't look like a knife it can easily dangle and doesn't need to be kept out of sight. You can leave it in your coin pocket and forget about it, then whip it out in a second when you need it.
(Couldn't help answering more than you asked. :P)