It won't work. The german patch is for the german version. The italian version has a much stronger version of libcrypt than the german one, as did the UK one.
Correct me if I'm wrong but AFAIK the Italian version has got 17 checkpoints per each disk whereas the German has only 1 for each disk at the start. Plus the 17 checkpoints are different from thouse that are in the uk one. Finally they are also encrypted. In order to crack this baby would take a seriously long amount of time as once you have found one point and cracked it you would have to continue playing the game until you found another. Hence not only would have to be some super hacker but you would also have to find every secret etc... to debug it. That's why the UK version took about 6 months + to crack.
Forget it and wait until someone figures out a way for emus to run the originals as I doupt this will be patched soon.