Quoting Matthew Finkel (2021-06-28 23:47:01)

Dropping this here in case anyone wants to answer them: https://blog.torproject.org/comment/292032#comment-292032

I'm assuming they are referring to running a standalone proxy along with obfs4proxy.

I'll paste it here so people don't need to go to the blog comment:

Are there issues in running a snowflake proxy while running an obsf4 bridge? What should operators of other types of nodes know?

That is an interesting question. I would assume many censors block completely the IP addresses they find having a bridge, so if a bridge shares the IP address with a snowflake proxy they might both get block if the censor finds one or the other. So having different IP addresses for them will be more effective.