The Cancer Grip spread fast years back!
On Mike Janich's book cover on Knife Defense
http://www.amazon.com/gp/reader/0873647408/ref=sib_dp_pt#reader-linkThere are four pictures on the cover. In two of the bottom photos, Mike is stabbing people with the high thumb/high ball of the thumb, cancer grip. ANYONE who spent one mere second thinking about this, would know how lame such a stab would be.
Now, Mike is a VERY bright guy (a friend) and after all this cancer grip hubbub, now knows not to do that anymore. But he and many others were caught in the shuffle of looking cool, mimicking the "stars" like the big boys, even so much as to put such cancer grip photos on the cover.
No doubt, Mike saw some "Filipino names" doing this, mindlessly mimiced them, and then his down-liners mimiced him....and the cancer grip grows to the point that you have knife courses where people use the grip regurlarly, thoughtlessly.
Hock
(by the way, the guy Mike is stabbing in the fourth, bottom right photo photo is Green Beret Jim Webb)