Totally agree with this. I sooo wanted to like the X, but this one potential issue is stopping me wanting to shell out my hard-earned cash.
Definately tempted to sit this one out and see if they re-introduce Touch ID via the screen next year.
Failing that, I'd be tempted towards the 8+. However, in doing that, it kinda makes you feel that you'd be buying something that's not the 'best' that Apple have on offer. Certainly puts me off that as well.