I've actually been toying with the idea of getting a ninjato sword, which is basically a straight bladed Japanese style sword, as I like the overall look of the design. However, the ninjato's most notable features are A) supposedly the traditional sword used by ninjas, and B) not existing historically, which combined makes finding a good one very difficult.
Conveniently for this thread though, it makes finding a
bad one hilariously easy. For example:
If you ever see a "weapon" that combines low price, blacked steel, and a parachute cord grip, it's almost certainly trash, and this one is no different. Notably it doesn't even mention what sort of steel it's made of, which always a giant red flag.
The included scabbard is a nice inclusion, including the suggestion to wear it on your back, which is actually a good idea for this sword, as you cannot actually draw a sword from a back scabbard when worn like that*, preventing you from brandishing it at your would be assailants and then having to endure their mockery n addition to them beating you up (if you own this sword, the beating was inevitable).
The same store also has this thing:
Which is still cheap enough I wouldn't trust it, but it's at least got a real grip on it and they tell you it's made of actually OK steel, so it has some selling points.....or, well, it has some features that aren't anti-selling points.
One of which appears to be a glass breaker in the hilt, which I can't really complain is a bad idea, but also doesn't seem to be a particularly good one, as even if you happen to be in a car wreak and happen to have you gladius on the time, a more conventional glass breaker or the one on the tactical knife you almost certainly also have would probably be the better choice.
*There are back scabbards that are designed to let you wear even a large sword on your back, but they're specially designed for that role, such as this one here:
Note how it's open to the side for most of the scabbard, so you only have to draw it partway and then rotate it out of the scabbard for the rest of the "draw".