I just received this Email from Coinbase. Seems like they changed their minds.
"In the case of bitcoin cash, we made clear to our customers that we did not feel we could safely support it on the day it was launched. For customers who wanted immediate access to their bitcoin cash, we advised them to withdraw their bitcoin from the Coinbase platform. However, there are several points we want to make clear for our customers:
Both bitcoin and bitcoin cash remain safely stored on Coinbase.
Customers with balances of bitcoin at the time of the fork now have an equal quantity of bitcoin cash stored by Coinbase.
We operate by the general principle that our customers should benefit to the greatest extent possible from hard forks or other unexpected events.
Over the last several days, we’ve examined all of the relevant issues and have decided to work on adding support for bitcoin cash for Coinbase custom