I have, by necessity swung a PA-32 in the bush, but it's a big ask and at my age now is nothing I would contemplate.
A lot of 60-70's era, IO 500 type engined aeroplanes had external power jacks and most aeroplanes had cables. Said something of the battery technology of the day I guess. Modern battery's are better of course, but we still get caught sometimes.
Excepting Flight of The Phoenix stuff, I personally limit hand swinging to the smaller engines. As for fiddling with electrics or anything under the cowl, (except for homebuilts etc), I would expect the presence of a LAME in spite of pressure from "management".