Yeah I'm confused, the little they've told me doesn't add up. 1st they tell me that their Reference material "is a bit more colour accurate, and is much flatter than the Da-Lite's High-Power". Then in the next email after they are aware I currently have a high power screen they say that their material isn't "dramatically" different from high power. I'd guess they've done precisely what Draper did, get the same material, slap their brand on it and say theirs is the best.
Even how they claim a difference between the Reference material and the supposedly older and inferior "Vivid-Pro Cinema white", I'll bet they just rebranded it to keep up with the 4k marketing hype, and it's the exact same material. All that would explain why they don't offer screen samples. When every other company out there does, I don't see how they can expect to be trusted.
The more things change, the more they stay the same.