I could not find these results within this thread so I figured I would post a link:
Pioneer SE-A1000 Charts measured via Tyll Hetsens at Innerfidelity.com
The charts remind me a tad of a Grado headphones. Flat in the midrange, slightly peaky in the treble, and some serious roll off in the bass. This includes the strangely shaped square wave responses.
Heck if they are more comfortable than a Grado and sound similar it might be a great option for tons of people out there.
That sums up their appeal, right there. Very Grado-like IMO, but wearable for hours instead of minutes.