I recently got a couple of Japanese knives - a gyuto and a santoku. While handling the gyuto, I managed to nick myself on the rear part of the edge of the blade (the part closest to the handle, where a bolster would be on a knife that has one). I'm pretty sure I've accidentally touched that part of the blade on other knives that I have, but none of them are as crazy sharp as my new knives, and I've never gotten cut by doing that. Plus, on these new knives, the rear of the blades sweep back a little bit, resulting in a pointy corner, whereas on the other (European style) knives that I have, the rear of the blades angles forward, resulting in a rear corner that's more than 90 degrees, and therefore less likely to poke me. Is there anything wrong with slightly dulling or rounding off that part of the blade? I've never used that part of the blade to cut anything, so from a practical standpoint, it seems reasonable. Would this fall into the category of reasonable customization, or would it be horribly offensive, or would it be somewhere in between?