"I'm currently stuck with having to deliver HA in a product" Have you looked at streaming replication in postgres? http://www.postgresql.org/docs/9.3/static/h

"I'm currently stuck with having to deliver HA in a product" Have you looked at streaming replication in postgres? http://www.postgresql.org/docs/9.3/static/high-availability.html http://www.postgresql.org/docs/9.3/static/high-availability.... http://www.postgresql.org/docs/9.3/static/warm-standby.html#STREAMING-REPLICATION http://www.postgresql.org/docs/9.3/static/warm-standby.html#... I'm not sure what level of expertise your customers are at, so this might not work for you. But it seems like a better fit than slony at least.