Is the “Shadow Step” spell redundant?

Question

The Ultimate Magic spell shadow step seems to be a watered-down version of the classic dimension door. This seems not only redundant, but odd, as shadow step seems weaker and more restricted than dimension door in every way - shorter range, self only, somatic component, only along a path of shadows... Yet they're of the same spell level.

Is this meant as some kind of "poor man's dimension door" for spellcasters barred from conjuration/teleportation? Is it intended primarily for the new Witch class? Or am I missing some advantage that shadow step has over dimension door?

Answer 1

The two primary differences:

1. The Witch can cast it.

2. There is no period of disorientation after the spell ends.

I'd imagine the witch having access to it is it's primary purpose. Particularly since the shadowy theme fits in well with the witch.