We did have one leak that might have resulted in complete loss of oil (crack in gearbox), but the aircraft landed before all the oil was lost. So don't fret about it too much!
HC, SW and I had one in 1992/3 (which I refer to above) but because it happened between the Thistle and a flotel a mile away did not cause a problem. It most certainly would have done if it had happend on a long leg, and was shortly before the one you refer to (which I also mention.)
However, I think we are all in violent agreement on this subject!