Don’t forget swords can be used to stab and parry 🙂 A lot of the European ones were a compromise between thrusting and cutting till you get to the later stuff.
For us and marines we generally wouldn’t want to look at firearms larger than carbines due to the confined spaces, and I expect ship officers wouldn’t be issued with more than a pistol sidearm unless they were expecting to take an active part in the fighting, at which point a trip to the armoury would be in order.
Might I suggest an advanced polymer or ceramic knife/sword, considering the risk of electrocution if you cut through exposed cabling (could also make the knife useful for quick and dirty engineering).
Didn’t the interaction between lasers and shields in dune cause a nuclear explosion on both ends?