I can't see it not working, however when I noticed the video last time I had some safety concerns should the pressure ever get too high and the safetey valve not work. If you turn your kegs over on a very regular basis then it might be fine but if you take some time to get through your kegs then autolisys might occur and the beer in the CO2 producing kegs is not going to taste as nice. I also suspect that the beer produced in these kegs, as it is produced under increasing pressure might have a different flavour profile than via a normal fermenter.
Cheers
Roller