The basic principles of the tactic are absolutely fine and I can see why people are having success. However....
If I am completely honest, it didn't work for me with Liverpool either, despite giving the tactic plenty of time to work. I did start using the tactic around 10 games into my first season so was aware that it may take time for the side to get used to it but it never happened.
Watching all games closely, I could see where the problems were with the tactic in relation to my squad so set about making various tweaks to try and suit the style I wanted. Following the tweaks, we went on a run with only 2 defeats in 17 games and also went on to win the FA Cup against Spurs. Now in the following season, I have only been beaten once in 10 games (that was my fault with team talks) including defeating Man City in the Community Shield. I currently sit 3rd in the PL and have kept clean sheets in 6 of those 10 games.
I'm happy to share the tweaks I have made, but didn't want to jump into Meraklija's thread and post any mods to the tactic without him being aware.