I discovered a clump of what I assume to be L. etrusca growing in a rather forgotten patch of flowerbed among gazanias and a few sparse, sickly shrubs. It looks like it seeded in at the base of a shrub and was always trimmed out, but then the shrub died (this was a Euonymous japonica var., as far as I could make out from the dried stems), and the patch was not visited again until after the Lonicera had a chance to get going.
I was pleased to find it - we have a lot of L. implexa growing about the place (also a very pleasant and well-behaved subject) but not etrusca, so I dug it up to transplant into one of the native plant areas. What I found curious is that, rather than a central rootstock/main stem, the many small, twiggy stems came apart, attached to almost tuberous little bits of root. Is this their usual habit or has some bug got into the roots to make them swell up like that? Or could it be over-watering? It was in a place where it got a sprinkling every other night during hot weather.
Either way, I have put all the bits into individual pots, so let's hope they succeed; they must be about 15 or 20 altogether and will be a great addition to the garden.
Re: honeysuckles in general - I have also had good experiences with both layering and cutting, for what it's worth; specifically with L. japionica and "Dropmore Scarlet" but am sure most will respond favourably.