Students on The ThunderChickens (Team 217) have Solidworks training every fall (Solidworks is almost identical to Inventor). About a dozen students learn how to design with it, and once the season starts, almost the entire robot is designed in Solidworks by students, not engineers. The engineers brush the drawings up with some lightening holes and mechanical feasibility issues (tolerences, sheet metal bending, etc.) and the robot is built almost entirely to print, except for some End-Of-Arm-Tooling which is usually prototyped out in the shop.
Edit: 217 Engineers help design a
few things

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