I'm passing on this variant as well. Unless you're a DIE HARD fan of the book and MUST HAVE it, I don't see it picking up much steam as far as value unless they eventually make the series and it takes off like gang busters. I did order some Walking Dead #103's though, but not autographed since they'll all get green labels due to not being witnessed by CGC and those tend to re-sell poorly.
Indy's CGC Gradings Master Thread - http://tinyurl.com/p45agbh
Want your Comic Graded or Pressed? - http://tinyurl.com/pn74odq
Notify you of new Gradings? - http://tinyurl.com/no58cku