I've checked these out two months or so ago - they're too dark/bassy. Similar to SE-5 CIEM I have, not the kind of sound I want, since I already have it in more portable form.
Somewhat lighter timbre (the 'stat thing), less hardhitting, probably due to more pronounced subbass roll or reduced bone conduction vs the silicone CIEM.
Pretty articulate, but I'd say there are better and cheaper headphones out there, unless you're a sucker for 'stat light timbre.
At least they're cleaner than SE-5, which have multiple small BA resonances.
The seal was very tricky - they have very large cups. I didn't have enough vertical regulation on the headband for comfort, but this is moddable. (Can add thick pads below the headband.)