Paul's visions in DUNE.

[BrianSoddingBoru4]

The Baron Harkonnen is well-known for using suspensors* to help him float and move about. The hunter-seeker that tries to kill Paul was "slick on the bottom due to the suspensor field." But they need a "carry-all" to get them out of worm trouble?

Wardrobe must have had a hissy fit about the "uniforms" seen during the first on-screen battle. The Harkonnen guards wear protective gear that has a lot of extraneous material and they're not seen after that. Curse of the Previsualization?

*He's under curse from a Bene Gesserit "witch" that causes him to suffer health problems and gain weight, a lot of weight. His suspensors are surgically implanted.

My guess (and that’s all it is) is that Holtzman generators eventually reach a point of diminishing returns. The fields are strong enough to support an assassin’s dart or a fat man, but would be too expensive to lift something like a spice harvester - remember that the Atreides were strapped for cash when they first arrived on Arrakis.

Possibly the only group that could afford really massive Holtzman generators was the Spacing Guild (they used the field to warp space). Which may also explain their exorbitant shipping fees.

Boru