I have not even touched one, as most people without €1000 impulse purchase budget, instead having fun with Drambo and Aum on my ipad. I do, however, read what people who use OP-1 write about it or how they speak in the videos. It is a very familiar tone, the same you hear from owners of Leica, Porsche, Astell-Kern etc.
The device itself can be designed (and most likely is designed) in the most fabulous way imaginable — by pricing it this way they make conscious decision to position themselves as a lifestyle, luxury goods, just for the target audience of people who make music.
Have you seen many people telling you how happy using SunVox (5$) makes them in comparable way?