Are there any confirmed miners like cgminer that will work or has worked with them?
They had stated that they would be using a version of CGMiner, but Kano pointed out that they cannot use an altered version of CGMiner without first releasing their code changes, which they have not done.
That is incorrect. They can release their software, and then wait for requests for source code, and fulfill them as per GPL. They do NOT have to pre-release their modifications.
The GPL allows the product to ship with an offer
to anyone to send the code. If they elected this option, they could not keep it even semi-private, since anyone (not only their customers) would have a right to request the code from them.