I don't know about you, but I'd way rather not be able to get calls until Monday than be vulnerable to this exploit.
That's probably the right choice, if there's a firmware update on Monday. If not, it's probably time to buy a new phone.
If you are currently, you probably have been vulnerable to this and many other undisclosed vulns for years, 3 days isn't going to move the needle much in terms of risk, but indeed it is a step to take.
Doesn't everyone knowing the vulnerability exists now move the needle significantly?