Jørgen Jakob Friis
I have little (read: none) experience with guns but I have the sneaking suspicion that it is two very different things. A gun has a 'dangerous end' and a 'safe end'. A live blade has two ends that you need to handle at the same time - for example while doing Nōtō. and it while have almost a will of it's own.
I would NEVER recommend ANYBODY to buy a live blade without extensive training under a competent instructor.
If one is planning on swinging it around, sure. If one is planning on training with it, sure. If one is planning on buying one to appreciate the craft of the sword and do *not* intend to swing it around or otherwise use it, why exactly do they need extensive training? Or do you only tear apart your food since those kitchen knives are so very dangerous...
I am one of those folks who tries to convince martial artists to get proper training in the sword prior to using them. Yup. But absolute comments are also quite silly IMHO.