Not yet but I am sure Gavin and his supporters will be trying to lobby them and the exchanges over the next few months. He made it clear that he has been doing that already and has some backing.

I dont think he would do it if he did not think he has some support from miners.

They probably just have not switched over yet.

He can probably get coinbase on board, and many of the bigger silicon valley type businesses that are sick of these libertarian types.

His biggest hurdle might be Chinese mining pools and miners, but they can try and convince the individual miners to switch to the pools that support XT.