I don't understand if you are self-syncing how would you lose your notes when switching jobs? Just exclude relevant work directories with sensitive info compress the vault and ship it to a cloud provider.
I appreciate you coming back and giving more details, it encourages me to look into it now. Maybe my expectations on the internet are just low, but I thought it was a virtuous act worth the effort, I wish more people would continue with skepticism but be willing to follow through and let their opinions change given solid evidence.