I've been trying to learn SolidWorks, coming from Autodesm Inventor, and I can confirm- it's really hard to switch- SolidWorks is more powerful, even, and is better at what I want to do- and I've only been using Inventor off and on for around 4 years.

I can only imagine what it would be like to switch from something that you've used a flavor of for your whole career to something entirely new, and 3D modelling for animations is way more complex than what I've ever dealt with.