I can't really think of a good reason why this wouldn't work, but I wanted to see if I'm overlooking something.
I've made 2 batches of homebrew in a plastic 5-gallon water jug that turned out pretty well. However, I get more and more worried about scratches in the plastic and eventually plan to buy a glass 6.5gal carboy. In the meantime, I'm thinking of dividing the entire 5 gallons of wort from my next batch across 6 1-gallon glass jugs, leaving enough headspace in each that I won't have to worry about a blowoff hose -- just 6 airlocks.
I know there's the chance that fermentation won't be equal in all 6 jugs, but I'm thinking I could just take notes and prime and bottle together the jugs with good activity, separate from those that are a bit slower.
(Another practical motivation for this is I have a narrow half-wall that's essentially dead space, but it would be just big enough to hold 6 1-gallon jugs out of the way.)
Again, I know the ideal situation would be to ferment it all together in one large carboy, but won't this work in a pinch?