Having read through this thread, the major question I have is "What pepakura viewer can I use on my Mac?" I tried using Wine, but it went poorly (made my version of 'bash' a zero length file that I had to recover from another box using a non-trivial procedure).
Is there a pepakura viewer native to OS X? Or something that can take the .pdo files and turn them into .pdf files for printing? I know I won't be able to see things in 3-D, but it would be a good step for at least getting patterns transferred to foam.