Hi,
I have tested the thing now with my Phil Jones Flightcase.
It is a little more tricky than for recording- but still, 7 minutes of futzing about for getting the best sound ever is quite plug-and-play in my book. I wasn't too sure about where I placed the pu while I recorded, so I had to find a good spot, and so I tried with and without preamp.
Without preamp was clearly inferior and nothing to write home about- close to a disappointment, really. It sounded surpassingly midrangey, was a little on the weak side, and got boomy when playing a little loud.
With preamp, however, it's a different story- no midrange-honk, nice and round, but not boomy, much better evenness and transparency. Great pickup. You almost don't hear it because, like someone else wrote, it's pretty hard to tell if the amp is on or not. But yes, it is, and the ehrlund/flightcase combination works good with I guess any drummer that plays sane levels. I am not missing my dyn-b at all.
Plus, I really like the jack that Jonas attached to it, and the jack-holder that gets fiddled to the tail piece with the g- (or e- ?)string. Doesn't damp the bass as the other jack-attachments (in the string afterlength) do. I would go so far as to say, that this is clearly the pickup with the least interference with how the bass looks, works and sounds (with maybe the exception of the full circle at least IF you have adjusters on anyway, which I don't have). Underwood-types are really damping the bridge, others damp the after length, require you to drill holes in the bridge (yuck!) or sit under the bridge foot- this thing does not make a difference whether it is on or off.
It's of course a different approach and thus a different philosophy and sound you get than with f.ex. piezos, wherever they sit. The sound is much more ambient and less punch-focused, and some note that as a problem, but since that is exactly what I was looking for, I am happy and satisfied. My pick-up search (that lasted a mere 12 years) seems to be over.
Best
Sidecar