I got mine yesterday, but I haven't gotten a chance to play around with it until today. I'm actually typing on it now! I got the white/silver keyboard with black switches. My normal keyboard is a Razer BlackWidow Chroma, but I'm a sucker for impulse buys, and I convinced myself that I needed a quieter mechanical keyboard for when I'm on the computer late at night. Here are some of my initial impressions below (I'm typing stuff as it comes to mind, so sorry if it sounds like I'm all over the place):
Anyway, setting it up for use was simple with Windows 7, no issues there. The first thing that struck me was that the backlight on this keyboard is very bright. (Excuse the crappy image quality. Still it should give you an idea of the lighting intensity)
Of course, you can toggle through several levels of brightness, so this isn't a criticism. The brushed look of the metal looks really nice, and it doesn't fingerprint, which is usually a concern of mine with brushed metal. The preprogrammed lighting effects are decent, consisting mainly of wave effects and reactive lighting and rainbows and whatnot. There's no software to customize your lighting however - everything is done on the keyboard. And if you want a completely custom lighting profile, you're going to need to do it key by key, toggling through the 7 color options available to you (you're definitely not getting 16.8 million colors like Razer or Corsair advertise with their keyboards). Personally, I'm fine with this - I'm not interested in setting up a dozen shades of red on my keyboard. Still, unless there's an easier way I'm not aware of, this key-by-key color toggling will probably be pretty time-intensive.
As for typing, it's a little hard for me to compare, since I've never used blacks. I've used reds before, and these switches definitely require more force to press than those. I did a little bit of gaming in Witcher 3, and I was a little surprised at the slight amount of fatigue my pinky finger was getting from holding down the Shift button during horse riding sections. Still, the switches feel consistent. Also, these black switches are surprisingly quiet. I tend to bottom out my keys fairly often, and on my red switch keyboard, doing so reasonably loud (not as loud as my Razer BW Chroma, however). The switches don't feel to mushy, and it's easy to tell that these are mechanical switches and not membrane.
Build quality feels solid - because of the metal plate, there's little to no flex in the keyboard. One issue I didn't like about my Razer BW Chroma is that there's a little bit of wiggle to the keycap when you fully bottom out a key. All of my Cherry keyboards didn't have this issue, and I'm glad to say I'm not getting any keycap wiggle on this keyboard either.
TL;DR: Very good keyboard for the price. Looks great too, and although each key is individually backlit, you're limited to 7 colors, and setting a color requires you to toggle through each one. Build quality is solid, and I'm satisfied with the typing experience so far.