If the model is a "solid" (as in MoI solid) the he will use the G5brep solid option.
So there are some other options, but they really depend on what's being exported. The designer will know whether it's "surfaces" or "solids" and whatnot. You'll want to avoid wires. You would have to rebuild all the surfaces, and would loose what Alias is doing with regard to surface continuity and such.......
The hybrid model thing is exporting out "all things alias", and can cause issues.
