From what I have learned, it is marketed torward specialty users like firemen. It isn't as sharp as a freshly sharpened regular chain, and you can't sharpen it without a special file. But it holds up to a fair amount of abuse, kinda like stump grinder teeth.
It isn't designed for the typical arborist, we wouldn't have much use for it. That is, unless you have an idiot cutting up a mud-covered pile of logs for firewood.