Good points, Don. The rubber-coated hook I have been using has worked well. However, it isn't the most stable storage option. There was one time that it slipped off and fell to the ground. I'd prefer a solution where that wasn't even a possibility. Hence, the reason I was looking for the plug-in holster that would lock the handle in place during storage. Plus, I was after the aesthetics of a nice, clean holster like you see on the public charging stations.
I don't know how concerned I would be with the plugging/unplugging cycles wearing out the connector. I assume if that were a major concern then ChargePoint and other public charging providers wouldn't use such storage holsters. Public charging stations are going to see a much higher cycle rate than our home chargers, and they cost thousands of dollars more than ours. If the cycling was known or even presumed to be an issue, I would assume public charge providers would use a different storage option to protect their hardware investments.
EV: 2012 Mitsubishi i-MiEV SE, Raspberry Metallic, Premium Package - Purchased 07/11/13
PHEV: 2017 Chrysler Pacifica eHybrid, Bright White, Platinum Package - Purchased 05/01/17