Don't know what it's called in French, but in the German part of CH Migros sells "Strudel-Teig" - extremely thin pastry sheets used for making, well, Strudels. You can find it in the refrigerated section where they sell the puff pastry, ready-to-bake bread etc.
The larger coops also have filo in the Balkan part of their international section (can't remember what it's called). It comes in long packets in a roll. I have used it often, but actually prefer the strudel teig because it's fresher and easier to unroll even though it comes in smaller sizes, which is not so good for a large pan of baclava or spanakopitta.
The globus delicatessa carries frozen philo dough in bern. It's very nice, quite fine. About chf 10 for a box. Perhaps there's one in Lausanne as well?
I can't remember the brand, but the box is gold-yellow
I once bought philo in a migros, also in Bern in the refrigterated dough section - but it was rather thick. I've seen the philo in the coop in the international section, but haven't used it.
yes it is in the same section (refrigerated) but it is definitely Philo, I got it last year and have seen it again two weeks ago. Maybe find a big Coop or Coop City? The stuff is imported though from somewhere in Western Europe, and it is yummy!
I just got some from the exotic food section in a big COOP. It has the word Baklava on the package so that is a vote of confidence. This will be my first attempt, and I'm already drooling!
Filo pastry and brick pastry are not exactly the same even though they are similar and somewhat interchangeable for most recipes! I saw both at the Migros in Chailly. Brick pastry can be bought online from Migros leshop.