Talking about using a double to its fullest.......
One of my doubles goes into a soft bag at the beginning of my hunting season and lives on the floor between the drivers seat and the transmission hump of the open 4WD hunting vehicle for 3-4 months.
During that time it will get the absolute crap bounced out of it over many thousands of kilometers of bush where no roads or tracks exist, be called upon to shoot Boars, Bulls and Brumbies, get rained on, get mud on, get sweated on, get blood on, get stomped on and get lots of dust on!
By the end of a 4 month season the dust has penetrated right through the canvas and foam soft gun bag and I have to wrap the action in a cloth inside the bag.

I don't know whether this constitutes using a double to its fullest but it sure is getting used, which is exactly what I bought it for!