I bought these switch as replacements of my stock MX blue switches on my Duck One III. Needless to say I bought this to be quieter (especially for others around), and I was amazed by how silent they sound. My keyboard is by far the quietest keyboard I've ever used now, stabilisers now being the bottleneck.
When it comes to how it feels, it feels sturdy, no faulty switch out of the box, and they don't feel mushy at all for silent tactile switch.
Coming from clicky switch, I just need to get used to small bumps (probably should've picked big bumps ?), but it feels and mostly sound amazing, would recommend, especially if you're looking for absolute silence.
It has also been shipped very fast around Europe and I'm glad I've found such a niche piece of hardware shipped from Europe !