Replication of specific tables using Postgres 9.4.4 and Amazon Web Services
According to the AWS Documentation, logical replication is possible from RDS Postgres instances, starting with version 9.4.9.  That would solve the RDS -> local direction.

The documentation doesn't make it very clear, but it seems that from version 10.4 an RDS instance can even be the receiver end (the subscriber) of logical replication:


  Beginning with PostgreSQL version 10.4, RDS supports the publication and subscription SQL Syntax for PostgreSQL 10 Logical Replication.