[notorious]

>> And how good is access to the said lock,
>> if you raise the outer handle fully,
>> will the stock D2 key have enough space to lock and unlock manually?

The beauty of A6 C6 handle is that the cover unclips and then slides sideways when handle has been raised. This is very easy operation. You need 15 seconds to remove the handle cover. Then we have full access to lock.

I have used black gasket silicone. It seals everything and still allows lock to rotate to unlock the car. But i'll only use the lock in emergency.