For those that do not have time to read the rest of the threads:
If KnCMiner hits their delivery targets, the existing competition will likely out produce and out price them before or soon after their first units are delivered. Multiply whatever hashrate they produce by an appropriate constant when you do your ROI calculations.
They may be a very competent technical team. However, KnCMiner has no power to "protect" your ROI. It doesn't really matter what their intentions are. The only way to protect your ROI would be to guarantee a percentage of the global hash rate for every purchase you make with them.
I doubt it will be that simple, KNCminer specs are way ahead of the current competition. The industry loves to tell the world about products that don't exist for months, giving KNCminer ample time to plan and react.
At the time KnC hits the market there are tens (perhaps hundreds?) of Th/s from BitFury online. And it doesn't seem likely KnC will be anywhere near Bitfury's Gh/W ratings.
So good luck protecting your customers, KnC

Have you looked at the Bitfury prices? They are not cheap, I was disappointed when I looked at the Bitfury prices. KNCminer blows them away for value, ASIC running costs are currently trival, so the GH/w is a small part of the equation atm. unless you are trying to set up a data center full of miners.