Originally Posted by pizzaguy

I agree with your entire post -but not the quick disconnect. I see that as a BIG RISK.
A battery cable opening up while you are driving means there is no filter (the battery) to clean up the ripple from the alternator.
Running a car without the battery connected is asking for multiple module failures.

What I am getting at - any connection that is just 'finger tight' is not to be trusted as your battery connection.