Works for permanent or occasional use
I tried out the usb-c plugs and haven't tried the headphone jack plugs.  The usb-c plugs seem decent quality.  It was a little awkward to fit it in, but once in seems quite secure.  Should work with any usb-c plug devices.  Using it for my Pixel 3 phone.  I would recommend it for plugging usb-c plugs that you are not going to use or use very often.  Example: I will mostly be charging my Pixel 3 with it's QI (wireless) charging, so I will not need to be needing to remove and replug this plug very often if at all.  I like that it comes with a little case (plus cleaning tool) that you can throw where you keep your phone or computer stuff, so you don't lose the rest of the plugs.  I recommend this.
Rating: 4 stars