I don't have a significant amount of crypto on exchanges for a loooong time. Since poloniex first started having "problems", "maintenance", "other issues" with Steem and SBD I realized it was not a good idea to leave cryptos on their side. Soon after was bittrex blocking withdrawals and asking for additional ID that took centuries to confirm.
I had a small amount of altcoins left on some exchanges but I took care of that yesterday to make sure I'd participate properly in the proof of keys event.
I'm curious about how it will go!
Cheers!