I have a Bm nimravus and I would rather use my cold steel folders for hard use. The nimravus is a sharpened letter opener unsuitable for any hard work. Too thin, the handle is uncomfortable for extended periods of time, to light to hack with, Material is too hard/brittle for anything but light duty cutting, the blade coating does not wear well, the sheath is meant for concealment and would not be suitable for long term belt carry, and so on.
Like said before it is a "tactical" knife, meant to be handy for a knife fight/backup, it is a specialized tool.
Mine is clipped to the visor of my truck, mostly because it has an exposed point at the butt, and it would be handy to break glass if necessary. Otherwise I gave up carrying it for reason above and it is a glorified letter opener. It sure looks cool though, almost like something from United Cutlery.