Hum, both the baton and pepper spray (small can) take up no room, go on the belt and under the [censored] so Im not sure what your qualm is with concealability. Anyway, Im talking about more of the legal and moral obligations of using a knife in a self defence situation. This is mostly academic really since any real mugger or what have you would probably have a gun and attack you from behind. The old batman comic hold up where the thug stands five feet away menacing a switchblade doesn't really happen ^_^