I am an American on vacation here in Switzerland, can I apply China work visa in Switzerland?

Good morning. I am an American on vacation here in Switzerland. I've been offered a job in Shangzhi starting the 17th of October. The information letter of invitation is being sent to me at my friends address in Lausanne. I understand there is a form - V.2011B - that can be used to apply from a different country from my own. As the time is short, will I be able to apply for the visa, use the V.2011B, pay for the same day service and leave from Geneva or do I have to return to the US?
Thank you.