Not sure what difference the model will have over the brushwork. The edges are still ultra sharp, same as the brushwork. Anyhow, add this to your radiant build menu, the first line is the name, the rest is the actual compile commands:
Q3Map2: (final) BSP -meta, VIS -saveprt, LIGHT -fast -patchshadows - shade -deluxe -bounce 8 -v
[bsp] -meta "[MapFile]"
[vis] -saveprt "[MapFile]"
[light] -fast -patchshadows -shade -deluxe -bounce 8 -v "[MapFile]"