Personally I think Sails is pretty cool in it's own right. As far as websockets go I feel like that is one area where Sails makes things dead simple and I've not been amazed by the overcomplicated Rails 5 implementation of websockets.
That said, I don't see Sails gaining a ton of traction even though it's been around for quite some time yet, and with it's security settings and beta status I don't feel great about building production apps with it yet.
