No need for nifscripts to import into blender. You can just get nifskope and export it as an obj file.
This can be done for any civ4 model – leaders, units, buildings, tile improvements, etc. It only exports there meshes and the UV data (texture placement). It does not export the skeleton. So you would have to rig that once you get to blender.
2. PYTHON 2.6.2 (32 BIT WINDOWS)
3. BLENDER 2.49a ( FOR 32-BIT WIN)
[BNW] Civ4 models into Blender WITHOUT nifscripts 2016-10-05
[BNW] Civ4 models into Blender WITHOUT nifscripts