Thanks for posting the article. Good read.
I've often wondered whether you could turn a growler into a minicask system. I just think it'd be nice to be able to set up a baby cask system without having to dedicate full cornies of homebrew. Two or three growlers for a weekend-only (Fri-Sun) cask system would be just about right.
Put in a little carbing solution, it won't hold a lot of head with the cheap plastic caps, but will give it a slight head- just like a real ale should have.
No refrigeration needed...a couple taps, a bit of ice, and you're good for the weekend.