"for subsequent data loads I prefer websocket"
There is notable difference here. Developer needs to write code to implement server-push in Websockets but HTTP2 servers will do that for you by sending all dependancy files with a single request.
Not very dramatic diffence. Location Europe, using 4G connection.
HTTP 2.0 is surely nice for initial page load but for subsequent data loads I prefer websocket (in the context of SPAs).