I finally receive these and after using them over the weekend exclusively, I have to say I really like them a lot.
Firstly, the fit is superb and the isolation is good. They are a bit heavier than expected due to the metal case, but not uncomfortable and the corners are rounded and do not poke or cause discomfort.
Secondly the included zip bag and tips are really nice at this price point and I really appreciate it. The cable is also good and overly stiff.
Thirdly, sound-wise they seem to be a neutral, natural sounding IEM. It's only downside is that it kind of lacks "bass". I've put it in quotes because it is there, but compared with other IEMs I've listened to, it does not have spark that euphoria in punch or strength, but in detail. It shines for me when I listen to movie/game soundtracks or orchestral music and it sometimes gave me that hair raising effect (LOTR when the Uruk-Hai are created).
Lastly, they're easy to drive and while they do not need an amp, using one seem to improve the detail and texture of the sounds.
Overall, they're great for me and an easy recommendation.