Only on quarians. How else am I going to get my hurricane to 200%? How?
Actually, because the bonuses are additive and simply subtract from the weapon's base encumbrance, the SMG bonus that female quarians get is sort of interesting if still not all that useful. Observe
Claymoar only= 60% PRS
Claymoar+Shuriken= 70% PRS
Claymoar+ULM Shuriken.= 88% PRS
Yes, female quarians are so adept at engineering that they can break the laws of physics to give the Shuriken negative mass and increase their PRS by equipping it. Now, this is pretty much useless on the infiltrator and of very little use on the engineer due to only a 10-28% difference, but if you want to decrease your incinerate cooldown by .5 of a second rather than getting an extra 250 more weapon damage per shot, go crazy. Or, if you want something that is actually of occasional use as a weapon (unlike the Shuriken) you can also carry a standard weight Locust, Tempest or GPSMG as a backup at no added weight. If you use ULM, even a backup Hurrdurricane will give you +25% PRS.
This actually works sort of with some other kits too, the ones that reduce all weapon weights by 20% (humans, male quarians, volus). The Shuriken becomes weightless unmodified and adds 18% PRS when ULM is equipped, provided you don't break the weight glitch in the process.