Not for me. Restored from an encrypted backup in iTunes (not iCloud) and I first had to set up the X as new, then update to 11.1, then I was able to restore.
That's exactly what I had to do. I got an alert saying that the software on the X was older so it wouldn't let me restore from my encrypted backup. So I updated the X to 11.1 and then restored after initially setting it up as new. it took almost two hours to get all my apps and everything else set up. it seems like there ought to be an easier way to move everything over to a new iPhone.