SQL Always on to HA vCloud DB for multi site config

We are looking at how we can add some resiliency to the vCloud Director DB and have been looking at MS SQL with Always On.

However in our testing we can't seem to get it working with the JDBC path that vcloud uses (it connect to the local site's DB server instead of the HA listener)

Anyone had any luck in getting vCloud working with SQL always On?

Are running 5.6.4