I'd say that Photoshop UI is more streamlined than GIMPs in several ways. In how it handles selections and layers and filter application, etc. And, it's not just familiarity. GIMP is clunky.

Whereas Blender compared to Rhino, or Maya, or Sketchup, or Solidworks--there is no one way to do 3D that works better than another. Moving from one to the other, you can only take the basic concepts of a mesh between them, how they get there is all over the map.