Well, it might have been a dead thread, but I wanted to share my two cents. I found very limited information on these prior to purchasing.
I am going to second the fatigue issue. After only a few songs, maybe as soon as 10 or 15 minutes, you will feel like you have NS-10s surgically implanted in your brain. I've sat behind NS10s for 10-15 minutes, and had no issues. These... Prepare to throw up, and in rapid order.
They sound great, but maybe best used for final mixing.
I would never even consider trying to use them for every-day monitoring!
Amy