Hello!
I asked 2 pharmacies and both told me they have them in stock (Medela Symphony) and no need to book in advance. I do not remember the cost, but it was about 2-3 CHF a day.
Personally, my health insurance reminburses 2 CHF a day.
If you buy the symphony in Switzelrand I seem to remember it is around 1600 CHF as it is the professional hospital type.
Others you can buy for less but soem say the result is also not as good.
I had the same experience with the midwife wondering why I would like a pump when I can just breastfeed...

I tried to explain about work or also wanting once in a while to give a bottle of expressed milk and my words were met with stupor... guess it is just different culture!
Anyway, try the pharmacy it should be pretty easy!
Cheers,
C