Because USD's Hydra's StreamGL renderer does not currently support GeomSubset, you can trivially exported textured geometry from this exporter that current usdview w/Hydra doesn't render correctly (i.e. no texture). In many cases, there are single faces (with two sides) that are using GeomSubset, but it's really not a subset, it's the whole thing.
In that case, we should omit doing the material as a subset and just apply the material to the whole mesh.
Because USD's Hydra's StreamGL renderer does not currently support GeomSubset, you can trivially exported textured geometry from this exporter that current usdview w/Hydra doesn't render correctly (i.e. no texture). In many cases, there are single faces (with two sides) that are using GeomSubset, but it's really not a subset, it's the whole thing.
In that case, we should omit doing the material as a subset and just apply the material to the whole mesh.