These are local beers in certain regions of Belgium, i would be surprised to find it here.

However i will check Carrefour (france) and see if they have Omer there..tastes between Leffe and Duvel , nice golden color.

On Topic : you clearly must be from Holland ( The Netherlands), many Dutch people in Bern ?

Faltrad was looking for them in Basel but surely he wouldn't mind expanding his search

Yeps, Dutchmen from above the rivers
Not that much as far as I am aware off. Leffe and Duvel, I like those!

To the OP:

Have you tried these folks?

http://www.nederlandbazel.ch/

They meet once a month at Noohn I believe. We went to a Sinterklaas do organised by them a couple of years back.

HTH
Nick