PM on the project here - All clouds and on-prem/local/docker work great! We test those, so if you have issues, please report in the repo we'll fix them.

I assume you run cloud-sql-proxy as usual (for proper TLS and passwordless IAM authentication), and then it's just another postgresql port for you. Any tool like psql can connect to it.

I run a personal Postgres server so I'm wondering how well it does there