I generally only use a computer (and, therefore, a physical keyboard) for work. Since I can't constantly allow myself to be super slow at typing, my advancement with the G80 has been slow going. However, because the travel is super short when compared to standard switches, I can tell that I'm typing faster than I would have had it used mx. I am still bummed I can't use my current caps, but am no longer bummed at the switch incompatibility. I have seen 3D printed converters to allow the use of mx caps on the chocc switches, but really want to get used to the G80 stock before modifying anything.
Not OP, but I doubt their board's build quality is indicative, really. The C and non-pro K series are wholly like different boards, at a different price point. All plastic, and while they're sturdy enough, it's nothing special.
Source: I have a K2. Compared to my wife's Epomaker TH80, I prefer the Epomaker in terms of build. But it's not like the K2 is bad, or anything. I'd expect the C series to be mostly comparable.