Hi, I have the C-Tek MXS 5.0 hooked up to my Six for prolonged periods in the garage.
I have it fitted with the eyelet connectors and simply plug in the connector.
But I do have mine under the bonnet, so not as neat as your solution.
The charger itself is great.
Conditions the battery so can be left connected.
Has reverse polarity protection as that’s an expensive mistake.
Have had a couple on other cars for years and I’ve never had a problem with them.
Ollie.