dlotempio wrote:
The Omnibus sounds wonderful but those contents still seem to be missing the HEXED story that appeared in one of the Vertigo Samplers.  HEXED isn't necessary to understand the INVISIBLES but, if you're trying to collect all the Invisibles stories, than the OMNIBUS could use it.  
HEXY was in Absolute Vertigo.  The first 2 WINTER'S EDGE 1-shots had Invisibles material included.