Bittrex just said yesterday they will support it and they "will take all reasonable steps to ensure that customer funds can be preserved on both chains. Bittrex will make all reasonable attempts to credit our users chain split tokens"

That doesn't sound very safe though. I know a lot of people are recommending to put this in a wallet where you control the key. But you also have to take into account replay attacks and when they release the coins to you.

What are people's plans and thoughts regarding this? I haven't heard much about it.