The rumor was that Cherry had one plant that made switches for Cherry products and there was another that made switches for third-party vendors. While I doubt that's exactly the case, there might be some incidental truth to it since Cherry uses PCB-mounted switches and pretty much everyone else doesn't. Being that the only difference between the switches, AFAIK, is the bottom part of the casing, I doubt they would be made in different plants.
In Ripster's pic, IIRC, the top switch is from a Filco and the bottom from the Cherry SPOS.