The one time I was worried: when the examiner cut both magneto's just after take-off, perhaps 3 feet off the ground... scary scary scary, and as I was on my exam there was no shortage of adrenaline anyway.
It has happened to me since, on renewal test and the like, overhead at 1000' or so, and it never really worried me. The shorter the runway, the better one must be at side-slipping, just as much as required. But the sound of the wind is eerie. Suppose glider pilots are better used to that.