I agree with this. I've been alternating been my LCD-X and Beyer T1.2 throughout the day today. In fact, my Beyer T1.2 feels slightly less comfortable on my head despite despite being so much smaller and lighter. I think I Audeze have done great in the ergonomics of the LCD-X. The weight distribution is extremely good for me. The two downsides so far, which I can live with, are some pressure on the cheekbone between my eyes and ears. I need to experiment with positioning the earcups to see if I can address these pressure points.i find both my audeze lcd-x and lcd-3 to be very comfortable -- i can wear them for hours without an issue. granted, i live in the northeast, but i don't have any issue with them being hot on my head.
while certainly heavier, i find the headphones much better than my hd600 which have a vise-like clamp.
The second one is some heat buildup. It's summer and quite hot here in London but the heat buildup isn't bad enough to cause discomfort. It's just noticeable after about 30 minutes of listening.
I did read reports of neck and shoulder pain/discomfort being caused due to the weight. I barely feel them on my head! As I mentioned, they feel a little more comfortable than my Beyer T1.2s.