Are Angle Deformers & CAT muscles supported?

I'm slowly learning how to character rig. I'm just curious to know I can use things like Morph Angle Deformer and CAT muscles to help smooth out my not-so-hot skinning jobs, and have that carry over into Unity.

I saw that Blend Shapes are now supported.

Does anyone have experience with this, or know of any good tutorials out there?

Thanks!