Yup, mine fits that category.
It came from Carnells in Milton Keynes back in 2002. I like to think it got 600 miles of progressive but not abusive throttle use, which helps to bed the rings and bores together quickly. That along with several dozen heat-cycles - also supposed to be good for breaking in new motors - under supervised rides. Of course, it could just have been thrashed with no consideration whatsoever ...
I'll say this, though. I ran in my first '99 R1 from new and was too easy on it. As a result it used oil at almost a litre between services. The Fazer doesn't use a drop to this day (50k miles now) and is smooth and strong still.
I've no qualms about owning an ex-demo bike.