If Belgium, they will expect the PhD in hand. It would be worth looking at early career people in the dept to get an idea of what level of publication is expected but generally I don't think there would be much difference. Belgians are very open to Canadians as the French are as mean to them about their French as they are to French Canadians. They are also much more tolerant of foreigners with less than perfect French! The downside of the Belgian Francophone system is that the universities have been seriously underfunded (mind you the same goes for French universities). You will be expected to show some knowledge of EU research funding as that is a crucial income stream. France is a more closed system but that is slowly changing. Switzerland is excellently funded, much more N American in outlook. This website might be useful for background information:
http://www.eui.eu/ProgrammesAndFellowships/AcademicCareersObservatory/AcademicCareersbyCountry/Index.aspxThe Marie Curie Fellows' Association
www.mcfa.eu used to have some really excellent resources on science careers in different EU states from people who'd postdoc-ed there as foreigners, but the link I had no longer works - still might be worth seeing if you can find anything on the website.