QWebChannel: toggle lazy signal connection

Current webchannel implementation supposes, that one should connect to javascript signals of a published qobject client-side first to receive emitted signals. This fact complicates the overall integration scheme. One must wait for a message from javascript client telling, that it has subscribed to every signal it needs, to ensure reliable signal delivery from the server.
I wonder, if an option, that would allow not lazy signals delivery, could be included.