I wonder how well those joints would hold up...
in a dusty environment like the moon or Mars. Dust tends to get into everything and can really gum up the works. Such a suit would need to be easily serviced by astronauts after every EVA. On Mars, removing the dust could represent a biohazard and a nuisance for shipboard equipment. The astronauts would probably need some form of decontaimination equipment in the airlock to keep from bringing the dust inside the spacecraft. All of this is doable with existing technology but it has to be factored into the airlock and spacesuit design.