I do not know much about getting married in Switzerland, but I can share a complicated story I know about.
Two very close friends holding a long-distance relationship for a while, she from South America and her European boyfriend (from an EU country) already living and working in Switzerland under a B visa decided to marry and have her moving to Switzerland. After she arrived in Switzerland, they were told by a lawyer that she could not get a fiancée visa because the husband to be was not Swiss. I would strongly advice you to check carefully if you are entitled to get a fiancée visa specially considering the visa which you will be given by your job. And the people at the Gemeinde might not be able to give you the correct information (as it happened to my friends: she came to Switzerland hoping to get a fiancée visa during her 90-day tourist stay and this was not true for her), so you must find a knowledgeable lawyer.
They were adviced by the lawyer to marry at his EU country, get a permit for her to live there (which got ready less than one month after their wedding), then register to live with him in Switzerland. She stayed as a tourist in Switzerland while they organized the wedding (what took them almost 2 months of paper organization and bureaucracies, proof of no criminal records for her, etc -- including the presence of an official translator at the meeting when they just scheduled the wedding AND ALSO AT the wedding because as she did not speak his mother language, because even though they could, they refused to speak English and they did not allow her to schedule the wedding or to marry without a translator who could tell her what was being told to both regarding all the legal stuff involved, separation regimen, etc), but she had to leave after 90 days and stay for two months out before returning to Switzerland and presenting her EU document at the Gemeinde to register as his wife.
Basically, it was quite a complicated situation. Their lawyer suggested to marry at his EU country because she would get an EU document (what unfortunately does not apply to both of you). It was also told to them that in case they would marry in Switzerland, they would get constant checks (calls in the middle of the night and random visitations) to see if it was a real marriage.
So, I think, after all the hard things they went through, and as her best friend I saw all the craziness involved, if you could plan to marry preferably at one of your home countries and apply for your Swiss visa already married, she would have the right to have the same visa as she will be already your wife, therefore, the process of getting a permission for her to live and work in Switzerland would go much smoother.
I understand you don't come from an EU country, so be prepared that things could be even more complicated than it was for my friends.
In any case, I wish the best of luck to both of you and MAY LOVE PREVAIL!!!