Metal chastity device with split bottom ring?

Has anyone worn a metal chastity device with a split or hinged bottom ring? I’ve noticed several models being promoted, but it seems they can be tougher to handle than the solid-ring varieties.

How do devices work that feature rubber tubing over the hinge?

I’m looking for a steel CD my wife can take off and put back on without needing me. The current one with its solid ring is becoming too much of a hassle.

Any ideas?