The dispenser looks something like the one above - except that one in the picture is two gallons, and mine is more like one gallon.
One of my main concerns about this is whether or not this vessel is capable of holding the pressure that will be in there with the carbonation and all, but I'll never know if I don't try. OK, I just realized I should post photos of the actual thing I have: first, in my temperature controlled fermenting/conditioning fridge, then from the front, and then from the side.
So with this recently bottled batch of Little Bear's Brown Beer, my "barometer" PET plastic bottle is getting firm, and this rubbermaid dispenser is bulging out quite a bit, so I could no longer resist taking a little sample. After all, sampling a small amount is so easy with this dispenser! That's part of the benefit I hope to gain.
Imagine my delight as the beer came out with a bubbly blast from the dispenser! It was pushed out with the fury of a driving snowfall! Wow! Cool!! I am always pleased with the marked improvement in taste that CO2 bubbles give beer. And this proves that the concept works so far. I will keep drawing samples each day, and when it seems right, I'll move it over to the cold fridge to stabilize it. Maybe I'll use it as a serving device on poker night next week. If it lasts that long.