Excellent rule system, reasonably detailed and interesting character generation.
An occult rpg, with overtones of conspiracy, and a liberal dose of Lovecraft thrown in for good measure.
I suppose a comparisson has to be drawn with WOD Mage:
The general game system has the edge over WOD(and hte New WOD), it feels far more robust and integrates with the other 'undead and Shapechanger suppliements' in a far less hap-hazzard way than say Were wolf or Vampire do.
However, Witchcrafts magic although varied is not as free-form as the new WOD Mage - still its enjoyable if a little formulaic.
So If your players prefer the security of a hard and fast magic system then Witchcraft is probably a good option.
Layout and art work are quite good, and writing is easy to follow, though the double -- become a little irritating.