Touchy Touchy!
I am not condoning oval circuits and I think that a run & break at a civillian airfield - particularly by a singleton and especially in a non-jet aircraft - is downright silly & dangerous.
The simple fact is if the 'average' club 150's engine quit downwind at either of the clubs near me they'd be in a field. Extra risk, extra damage and a load of bad press.
What about the noise issue?
As a student would you rather do an hours' flying with five landings or ten? I'd take a wild guess at the student who'd be more competent as the one with the most landings