Nevertheless, I really like them and they are really unique in my opinion. Sound-wise it is difficult for me to judge because I suspect that they would sound way better in a proper case. The space bar could be the most rattly space bar I have ever used, but I guess one can fix that really easily with some lube or so. The keycaps don't wobble and off-center key presses are usually no problem. However, I would suggest only typing on them at an angle, due to the fact that when you rest your fingers on them and push them forward too much they can bind a bit (it's a bit hard to explain - I hope you get the idea).
The keycaps are really ,,yummy'' as Chyros would say, and shape-wise they might be my favorite ones so far. They are a pain to remove and I unfortunately broke two switch stems while trying just that, so I would be a bit careful here.
Sorry for the bad video quality however, I hope that the typing demonstration can give you a bit of an insight into how the keyboard could sound in a proper case.
Enjoy and thanks for helping me identify the switches :)
https://youtu.be/aUofbql2Jgk
And some pictures:
Spoiler:
I have the suspicion that they are very similar to beamspring keycaps. Maybe someone can try out if they are interchangeable sometime in the future.