I think my Carradice would have coped much better, even uncovered. It certainly would if it had been oiled in living memory.
As well as the eau de treacle factory emanating from my bike, as I was sitting here a few minutes ago my rear light (Smart Superflash - early model) which I did not switch on yesterday, decided to switch on of its own accord. A change of batteries confirmed that it is 1) dry inside and 2) dead.