Mantis one of the least respected knife companies 'round here. The owner, Jared West, had the brilliant idea of having the fanboys (the so-called Mantis Militia) on his forum spam this forum with posts about how great his knives were. Obviously that didn't go over well. Knarfang already covered the issue about the authenticity of the steel. I'll add to that the fact that Mantis, as a company, hasn't existed for a number of years now, so the fact that there's apparently still Mantis knives in stock somewhere should say plenty about the quality of them.
After Mantis went down the toilet, Jared West forme QU4RTERM4STER or however the #$^% the stupid thing was spelled. Some designs carried over, some were new, and some were obvious rip-offs of come custom makers' designs. They claimed to have a huge, impressive knife museum, as well as a state-of-the-art manufacturing facility, at an address in Texas that obviously couldn't house either, and the machining equipment footage they advertised exactly matched that as advertised by a company in China, yet they claimed that they were made in the USA. Many dealers that sold Quartermaster knives dropped the "Made in USA" claim in their descriptions, some stopped selling them altogether.
Last I heard, Jared West was running a car wash. He also completely screwed over his dad, but I can't remember the details of that story.
So, you might like the design, but you'd be buying a knife of questionable quality, dubious materials including mystery steel, and without any expectation of warranty or repair service. I won't question your taste, but that knife might be one of the least unergonomic of his designs. Most look like they were designed specifically to be as uncomfortable and painful as possible to use.
