I’ll second that SW can make life easier in the end. To some extent it won’t allow you to make some of the “impossible” geometry you can create in Rhino. But, at the same time it will allow you to make impossible to manufacture pieces, too. Like anything, it takes practice to learn the “right” and “wrong” way to create something in terms of your efficiency at modeling parts.
However, if you pass off 3D Rhino models, your engineering staff will have an easier time understanding what you’re trying to pull off, IMO.