Can't help you, but the Porsche was just the same. It did "clear" itself after a few seconds and drive ok.
The worst was coming off a motorway cruising up to a rounderbout then having nothing for a few secs when pulling out. Foot flat to the floor, all of a sudden all the power comes in at once all 500+ bhp
Funny, as soon as I phoned the dealer they said coil packs. Didn't need to book it in either, they just replaced while I waited.
Personally I would be tempted to phone a couple of dealers, and ask for the service manager. Or like you said a good indi. Explain the symptoms, suggest coil packs.