I like this thread because I grew up in the 70s and 80s playing a sci-fi RPG called Traveller. It was (is) a game loosely based on Asimov's Foundation series and it had, I believe, a profound influence on Joss Whedon's Firefly TV series.
In the Traveller universe, edged weapons and tools occupy a large part of players' gear, given that firearms and energy weapons can be restricted by law, the environment of deep space, the presence of delicate equipment on spaceships, and technical development on a given planet.
So on spaceships expecting trouble in Traveller, there is often a cutlass secured to the bulkhead above every hatch, a pry-tool in companionways, low-power shotguns in weapons lockers, and so forth. A catch-all term, "blade," is applied in the game to . . .
"A hybrid knife weapon with a heavy, flat two-edged blade nearly 300mm in length [~11"], and a semi-basket hand-guard. Because of the bulk of the hand guard, it is generally carried in a belt scabbard."
Someone mentioned a D-guard Bowie, and that's about what the "blade" is here. Given that shipboard combat would entail first depressurizing much of the ship to minimize explosive depressurization, crewmembers would be in vacuum suits (EVA suits) and vulnerable to all sorts of blade weapons.
In the game's setting of star liners, the rules indicate that in the interest of keeping the peace, projectile weapons of all sorts and longer edged weapons are prohibited, leaving passengers the right to wear only a dagger or the aforementioned "blade," openly.
So there you have one sci-fi environment's take on the original question. Personally, I see the Glock 79 and 81 and Becker Tac Tool fitting right in.
I have fond memories of late nights eating pizza and playing Traveller with my pals. I might just have to get a posse of space smugglers together again!
Zieg