As a counterpoint, there are some models that aren't super obtuse in grind, even while being relatively thick. My 0.190" or so thick AXE Hammer slices like crazy, and my 5/16" NMFSH is no slackard either (even without considering the thickness). Some of their knives are intentionally built to be stout beaters (MOAB, NMFBM, KZ, etc.), while some are produced as great slicers (AD, AMS, MW, etc.).INFI is great, the only problem I have with it is Busse going all Cold Steel with the marketing. Take a knife that's relatively thick behind the edge, with a relatively wide angled bevel, and what you have is a long chisel. Sure you can hammer it through a cinder block, but you could do the same with plenty of other tool steels, couldn't you? Also, their breathy INFI page makes the stuff sound like the best steel for every use case, in every possible way. When a salesman tells you that something is amazing, in every possible way, and that nobody else has anything like it, they're usually peddling snake oil in my experience, so that page sets of my BS detector pretty quickly.
As far as them being snake oil salesmen, I don't believe thatt to be the case. Initially, I was turned off by their claims. After watching countless testing videos and getting out there with one of mine, I can say that the site doesn't bother me anymore. Excluding the bend-to-break tests, I've pretty much substantiated all of the claims I want to*.
*Not going to lie, I would like to cut at least 2,771 pieces of 1" hemp rope. Then again, that's not entirely representative of modified INFI, since they ran out of rope.
http://www.bladeforums.com/forums/showthread.php/85283-New-old-pics!-Busse-9-Test-at-the-Blade-Show