I just got mine -- ordered 3/29.
Received first Russian tracking status on 5/5 -> "Export" on 5/13. It showed up on USPS on the 19th (New York.) It arrived in California 2 days later.
The clamping force was higher than I had expected, but it's really my first pair of headphones, so I don't have much to compare them against.
Mine came without the cutouts. I'm not brave enough to cut them out yet. I feel like I may in the future, though, as it seems similar to removing grills from speakers, which often has notable effect. It just seems so permanent...scary.
On the E7/E9, I'm using all of the low gain options (1/8th socket and gain switch to low), as going above 9 o clock on the dial is too loud, unless I turn down my source.
I'll leave the sound judgements to those with more experienced ears. It's definitely fun and impressive to listen to tracks that have very low, enveloping bass notes, though.