Although Photoshop is just raster, if you do a Place of an EPS file you can scale and position it to enormous sizes if you like. When you commit to the placement the vector is rendered nicely antialiased as if it had been a huge bitmap version.
You can even Place Linked, then later if you want to tweak the model you would export and replace the same named external EPS file, and in Photoshop it would update the rendered layer.