I don't think so but Meatier (https://github.com/mattkrick/meatier) should receive uws as default engine since it build on SC, you could look into that but honestly I don't understand this project at all :P
https://github.com/faye/faye-websocket-node
I don't know enough about the inner workings to be able to tell if it's compatible. Any Speeding up of meteor would be HUGE news.