>> No - of course it doesn't matter.

Can I have that in writing? Oh ...

>> It is a badge to distinguish the insider from the outsider

Don't agree with that. If that is the case it's only done to annoy those it annoys

>> and is a ritual observance

Maybe it is now

>> - presumable because Mr Cope spells the words that way in the Great Book.

Was he the first to do so? Methinks not. The replacement of Christ with X is very old and harks back to Chi-Rho crosses etc