From what I've read Jimmy it's more unsightly than damaging and luckily it's just a couple of small areas. Already had one big bill £495 to have the transmission filter and fluid changed - well worth it, changes are silky smooth.
Agree, had an XE as a courtesy car, nice place to sit but suspension as good as my Omega and as bland as anything. The XJ just has so much presence and the air suspension makes the car waft along