skip 2 page numbers

[James Bailey]

I got from someone (probably kieran) a while back a simple scheme function to 
skip the first two page numbers. It works fine, but I'd like to move the page 
numbers to the footer.
This, is what I got:
\version "2.11.65-1"
\include "titling-init.ly"

#(define (skip-two-page-numbers layout props arg)
  (if (or (> (chain-assoc-get 'page:page-number props -1)
             (+ (ly:output-def-lookup layout 'first-page-number) 1))
          (eq? (ly:output-def-lookup layout 'print-first-page-number) #t))
      (create-page-number-stencil layout props arg)
      empty-stencil))

\paper {
  oddHeaderMarkup = \markup
  \fill-line {
    " "
    \on-the-fly #not-first-page \fromproperty #'header:instrument
    \on-the-fly #skip-two-page-numbers \fromproperty #'page:page-number-string
  }
  evenHeaderMarkup = \markup
  \fill-line {
    \on-the-fly #skip-two-page-numbers \fromproperty #'page:page-number-string
    \on-the-fly #not-first-page \fromproperty #'header:instrument
    " "
  }
}

I successfully moved the page numbers to the footer, but I can't get the page 
numbers and the skip 2 pages to work simultaneously. Can anyone help?
This is what I tried:
\paper {
   oddFooterMarkup = \markup \fill-line {
      \on-the-fly #first-page { " " }
      \on-the-fly #skip-two-page-numbers { "– Windhauch –" \fromproperty 
#'page:page-number-string }
}
For what it's worth, the one that works (but only skipping the first page) is:
\paper {
   oddFooterMarkup = \markup \fill-line {
      \on-the-fly #first-page { " " }
     \on-the-fly #not-first-page { "– Windhauch –" \fromproperty 
#'page:page-number-string }
   }
}