@Esteban, i am sure that 1 watch is more than enough for this trip, you will have so much to do that you will defenetly forget to even look at your watch to know what time it is, go with the breitling.
BTW seriously do not worry about the carabinieri stories, not true they have more important things to do than chasing private individuals (tourists)wearing reps, have a nice trip and take care.
All the Best