Okay, that is one of the biggest changes I did not see coming for Geist 2E.
It definitely amps up the wierdness factor for them when it comes to interactions with the other splats. Mages might be weirded out by this revelation, seeing as two Arcana deal in the manipulation of the soul. Mummies would lump them into the Lifeless category since the lack of a soul means no Pillars (unless the Ka and/or Sheut is substituted by the Geist himself). Changelings and Prometheans would be similarly disturbed, seeing as the former lost parts of their soul to the durance and the latter are trying to transmute one through their Pilgrimage.