Surely you don't use a pump with your Cyclone do you?
Thats just becouse its not worth the effort.

I live a hundred yards from the coast to the sea and the town nearby have a divingshop with cheap air that is open all year long.

However: point is - I can if I want to, the tube on the Cyclone is aluminium and it wont take damage of air with moisture inside, like a steeltube would do.