It's totally impressive. In image sharpness, price, and in WEIGHT.
It is, however, overpriced by, at the very least, 50%. I could sell my 500 series-1, 17mm TS-E, 1D MK IV body, 5D MK II body, and maybe cough up a few hundred more dollars if I absolutely had to have one. Sadly, it wouldn't result in any improvement in my skills, only add to my bragging rights. My kit as well as my wallet would be some considerable measure lighter though.
As soon as USA-CPS has one for loan, I'll be stepping up to try it just so I know what's it's, in fact, capable of. In a year or two or so when all the early adopters have tired of their new toys, a used copy MIGHT come on the market at under US$10K. Then again, the DOW might top 20K as well. Dreaming big isn't generally a crime.