Last week I finally managed to get hold of some of this, and have been trying it out on a few loads to see how it fares. Only used it for white washes so far, but initial impressions are good. Love the smell, it reminds me very much of a detergent from years ago although trying to recall which one exactly has left me stumped.
It does behave rather differently to a synthetic detergent. At the start of the wash, the water remains clear with no suds, looking almost as though no powder has been added. Once the wash starts warming up, the water takes on a slightly milky look with a few bubbles, eventually forming a thin layer of proper suds once higher temps are reached.
Usually my Bosch sudslocks and adds an emergency rinse or two every time I wash a full load of towels, regardless of how little detergent is used. With a full 105 ml dosage of Acdo, it went straight through the first spin without any issues. The rinses are cloudy at first, becoming progressively clearer, but with absolutely no foam. I'm finding three rinses does the trick for me, and a fourth would probably be overkill.
It does appear to work well on normal "grubby" loads, with everything coming out perfectly clean and white. Have not had the opportunity to use it on anything badly stained yet, so I'll be interested to see how it copes there. Due to the lack of enzymes, it might benefit from a bio prewash in such cases. Then again, given the high bleach content, and the ability to dose generously when needed without risk of sudslocking, I suspect it could well do just fine on its own.
Think I'm going to stick with this one for a while, it's ticking all the boxes for me. If I recall correctly it was something like £1.75 per box, and at that price I'm seriously considering stockpiling some just in case it proves harder to find in the future.