Keg,
It requires you to be able to fly more than an ILS.
Haha...but as you fellas on the 767 will soon find out, an RNP-AR requires far less button pushing and less of the old MCP finger dance.
And as for some of the earlier contributors, it's pretty clear who is Perth based and who is just throwing a bit of mud from the sidelines! Choosing sides...pffft, what crap! Best job in QF at the moment I reckon!