I have to admit that the lack of conversation about the latest models seems to confirm these products are still ultra-niche. Grzergorz told me they are focusing on expanding to other markets than the EU. Perhaps this explains the push towards universal models and the Chinese market.
I still continue to enjoy my SE5 Ultimate, but custom IEMs have lost most of their appeal to me. Sure, they're nice to have, but for the price commanded by flagships one can now afford both a pair of excellent full-sized headphones and a pair of decent bluetooth in-ears with ANC. No more trouble with demo units, potential fit issues, long manufacturing lead times, weird ownership policies, close-to-zero resell value, expensive remolds, so-so noise isolation in planes etc.