It will be better to inform the buyers on the PCB manufacturer that made their original boards, whit that manufacturer we could be 100% that will get working board, otherwise, even whit the gerber files from KnN its still a huge risk to order boards just to find out that there not mining.
The gerber files from HashFast Evo boards are free from months and yet by this point only peppermining manage the make a working board for the GoldenNonce 700Gh Chip.
And
BitCrane.
Unless they have a different board in the production versions than is shown on their website, the Bitcrane board is exactly the same as the Evo board, with a Bitcrane logo added to the silkscreen layer.
That being said, while KnC hasn't gotten back to me with information on the chips yet, I don't see why they should be a challenge to design for. They should certainly be easier to work with than the HF chips in terms of board layout.