-Thanks for this tip - I've had them around for years at work, but never particularly realized their utility outside the set and stage business.
Other bonuses than those you listed:
1) Small footprint, easy to place at awkward places/ small cabinet flats.
2) "Twist-Lok" (bayonet) and outwards pull resistance achieved by design, with the chrome lock merely for not twisting out the bayonet.

Only downside I can see is that the intake (female) connector has a central pin, which could be perceived as a "male" connector for some.