This concept has very likely already been done in Traveller, though I have not seen an example.
TL 12 HiVee Defense Belt
This device uses inertial damper technology to deflect fast moving, small projectiles such as slug thrower rounds and grenade fragments.
It provides no protection against hand to hand attacks.
The HiVee Defense Belt produces force ripples that can cause malfunctions in the highly complex, finely tuned mechanical systems of battle-dress.
The HVDB isn’t compatible with the grav belt.
Game mechanics and other notes--
I'm undecided, but it should probably just make you harder to hit.
It should not be as potent as the shields in Dune.
I might come up with a different reason it doesn't work too well with battle-dress.
TL 12 HiVee Defense Belt
This device uses inertial damper technology to deflect fast moving, small projectiles such as slug thrower rounds and grenade fragments.
It provides no protection against hand to hand attacks.
The HiVee Defense Belt produces force ripples that can cause malfunctions in the highly complex, finely tuned mechanical systems of battle-dress.
The HVDB isn’t compatible with the grav belt.
Game mechanics and other notes--
I'm undecided, but it should probably just make you harder to hit.
It should not be as potent as the shields in Dune.
I might come up with a different reason it doesn't work too well with battle-dress.