I then create a lopnet (lopnet1) and inside, I create a assetreference node to link to my USDZ file, and leave Primitive Kind set to none. I can verify the texture shows correctly while inside the lopnet.
Back one level, where I have the lopnet, I create a lopimport node and set the LOP Path to ../lopnet1, static, for primitives: All Mesh Primitives and All Materials and Shaders.
Next, I try to use the unpackUSD, and I can see some string attributes are being passed, but I got a warning:
"Found material bindings on prim at path (/assetreference1/Geom/mesh) but MaterialBindingAPI is not applied on the prim"
I am a bit lost where to get help for this specific issue...