It is generally accepted that we should not charge any EV using a cable coiled up. I accept that at lower powers it might not be a problem but if we never do it then there can be no misunderstanding or mistake.
I keep mine in the boot already unwound. It is a real pain winding it on and off the holder and to be honest, if you are using it everyday anyway is it good for the cable, let alone our patience, to wind it onto the holder daily.
My feeling on this is that in my opinion the cable supplied with the car should really only be used when charging away from home and that a permanent and fixed charging cable, such as the Vauxhall Home Charging Pod, should be used for regular day-to-day charging.
The Vauxhall charging pod is not so expensive. It is way cheaper than the early versions of home pods and at around £400 (plus about £100 fitting) I think it is a reasonable price for something used daily and making charging so much easier and simpler. I get home, hit the button on the door and plug in and be in the house inside 20 seconds! Same when leaving... get to car, unplug, plug into holster on wall, get in car and go. No faffing around with the cable.
When wet and windy it is an absolute lifesaver and I wouldn't own and electric car without a dedicated and fixed home charging pod. Simple as that.