I've handled a few. The designs seem plenty sound, especially considering they were designed by former Green Berets.
The handles are thin and blocky; they feel more like those of folding knives than those of fixed blades, but they are still very comfortable. If you're new to knives you're unlikely to feel the same quibble as I do.
The DLC finish on the blades is vapor-deposited, which makes it rougher than most. This might impede cutting action, but not by much, if at all. A knife that size tends to rely on geometry and metallurgy rather than texture, and should still cut fine. Can't say for sure.
Lastly, the S30V steel has proven immensely popular in folding knives, but in fixed blades has met with some controversy. The steel is very tough and very wear-resistant, being high in carbon and full of vanadium carbides. However, it is a new alloy, being less than ten years old, and the full implications of its use in fixed blades has not yet been realized. There have been instances of catastrophic failure in S30V fixed blades that aren't yet fully understood, but these have only occured in the most extreme of circumstances. Functionally, the steel appears quite adequate.
My advice would be to pull the trigger. You're unlikely to be so dissappointed as to be injured or even inconvenienced by the steel. The knives appear solidly constructed and reliable, and have already (apparently) been sold to many military operators who are quite pleased with them.
Go for it, and let us know
