I considered blacks, because I actually didn't want the tactile bump, but the main problem is that the distance to actuation overall is just so much larger than the scissor switch keyboards I'm used to that it just feels so weird. That, and I'm pretty sure I need o rings, because god is that thing loud compared to my laptop.
I definitely got better performance in 4k on jacks, and my accuracy increased, but my overall misscount increased as well. I would have been fine with playing on it for 4k, but in 7k, the keyboard just feels so different, my muscle memory was all fucked up and I just couldn't play anything.