Three percent of people in Europe use maps on their mobile phone

According to the report, the majority of users -- 73% in the United States and 57% in Europe -- accessed mobile maps via the handset's browser. Less than a third of customers in these markets used a downloaded application.

Source

In a town like Lausanne it would make sense to use google maps paired with the phone's gps because there's municipal wifi you don't need to agree to for use. As a result it'd be much faster simply to load the appplication.

With time and as dat costs go down the trend of using Nokia's in built maps will evolve...