Certainly illustrates the need to train as though the opponent always has a weapon that you just may not have seen yet. In my dojo that's often actually the case: We do a fair amount of stuff involving use of kakushi buki or small hidden weapons. And of course, what's sauce for the goose is sauce for the gander: whatever the bad guys use we can use too, and I rather like the design of this folding boxcutter. Not here in California anyway -- no advantage in either direction. A concealed fixed-blade is a felony no matter what the style. Likewise, a fixed-blade worn openly is totally legal no matter what (barring certain statutorily defined venues such as schools, government buildings, etc.). So when I wear a fixed-blade knife, it's 'most always my handmade Scottish dirk. I'm also looking forward with great anticipation to one item in a forthcoming line of historically-correct 19th century style bowies from Hanwei, the Bell Bowie. This is a reproduction of one of 14 surviving bowies made by Samuel Bell. Bell -- like Bowie -- is a Scottish name, and this one has a remarkably "Scottish dirk-like" look to it. Samuel Bell was a cutler and silversmith in both Knoxville, Tennesee and San Antonio, Texas. He was born in Washington County, Pennsylvania; and at the age of 14 went to work in an arms factory making swords for use in the War of 1812. He later became mayor of Knoxville before relocating to San Antonio. While in Texas he made a pair of silver spurs for General Sam Houston (also Scottish, from the Gaelic huisdean), who wore them at the Battle of Sam Jacinto. (Other trivia: There were 30 Scots among those who fought in the Battle of the Alamo, and piper John MacGregor stood on the adobe walls in the midst of the battle to pipe the men on in true Scottish tradition.) I'm of partial Scottish ancestry and also a Texan by birth, and this knife just really calls out to me!