I import .obj into Rhino files from Metashape with vertex colors and textures and they both display without a problem. So it is possible. In Metashape I build the model and then build the texture and then export the model with data type: Wavefront OBJ and then on the options form I use these settings:
Then in Rhino I select File → Import and use the default settings:
The Photoscan textured view:
and Rhino Rendered view:
look the same.
To see the Rhino Rendered view press: Ctrl-Alt-r
To see the Rhino Shaded view press: Ctrl-Alt-s
To see the Rhino Wireframe view press: Ctrl-Alt-w
To see if the material for the texture got imported successfully and attached to the mesh, click on the mesh and then go to the select the Materials tab on the panel as shown here:
The Name should be filled in with the name you used in Metashape to export the model, Type should be Custom, Color should be checked and show the name of the .jpg file.
Hope this helps?
I am working on a script that imports the model over 3X faster that may be ready soon. Would this be of use to you? The example I show here took Rhino 73 sec to import but only 20 sec with my script.
Regards,
Terry.