Mechanical engineering and Industrial Design

There are jobs that use industrial designers that have product architecture/engineering analysis/mechanical design knowledge.

I worked for a place that did Solid Works parts/design and etc, and also places where designers hands of designs to mechanical engineers.

Obviously the more you know the better but how much of that is expected for an average industrial design or one that use Alias or Rhino?

Some of these jobs posted require both degrees it seems!

furniture.