Yes, the swoopy bits are easy.
Using a combination of specially formed complex profile walls, beams and columns with slicing by Solid Element operations, you can model the irregular curved swoopy things.
complex profile wiki
Solid Element Operation
However, there's no way to wholistically make a structure that is organically editable in any direction like a mushy blob. You build a library of likely profiles and edit them as you go.
Dwight Atkinson