That is correct. You'll be ok as long as you don't reboot the computer, until Nvidia updates the driver again.Was wondering why the 2017-001 update message showed up again in the App store. I installed the original 2017-001 update and it was successful. In fact, my build number is 17B1002.
From another forum I read that since the build number changes as chrfr pointed out, the Nvidia driver (Macs that use this driver) gets disabled. Correct if I am wrong.