There's a difference between an "inspired" design and a dead ringer. Until now, ZT knives featured blade lengths that fell in between the lengths that Rick uses on his XMs. So it could be argued that ZT knives weren't direct copies of XMs. But not anymore.
Obviously we'll have to wait and see how the 0562CF turns out. But if it lives up to its potential, it could end up being direct competition to the knife that spawned it. Throw in the 2 to 1 price ratio between an 0562CF and a 3.5" XM-18 with a slicer grind and it doesn't take a degree in rocket science to figure out which high-quality Hinderer-designed knife offers the better bang-for-the-buck for the average (i.e., non-military/LEO/EMT) consumer.
Frankly, I can't wait for the first side-by-side comparison of an XM-18 and an 0562CF. But this much I will tell you. If I was hanging onto a 3.5" XM-18 with a slicer grind for investment purposes, I'd darn well sell it before ZT turns up the heat. I wouldn't be the least bit surprised if the 0562CF puts some serious hurt on the secondary market for XMs. And who knows? Diverting money from the secondary market into his own pocket may have been Rick's goal all along in authorizing ZT to build the 0562CF. If that was his intention, I say more power to him.