HuskSync 1.2 adds support for Velocity proxies.
Velocity is a proxy server similar to BungeeCord but a completely different project, built from the ground up. It is currently being maintained by the Paper team, who have announced that Waterfall will be discontinued in favor of it.
Installation and configuration on Velocity is exactly the same as on BungeeCord-based proxies.

• Added support for Velocity proxies
  • Metrics have been added for HuskSync (Velocity), too, which you can find here.
    
  • As with BungeeCord, installation involves starting the proxy (and spigot servers) with the plugin, filling in the Redis and optionally MySQL credentials, then restarting the server.
• Added option to independently enable/disable synchronicity of creative flight
• Miscellaneous code refactoring and performance improvements

The new option to enable/disable creative flight will be added to the config files on your spigot servers. It is off by default.
Oh, and have a Merry Christmas / Happy Holidays! I need a rest