I got confused with the various questions about Windows 8, SSDs and dual-booting, and none seemed to cover all three, so I made my own specific one.  I answered it too :) My answer is not drawn from experience, but from trawling through the various options presented in other answers.
Can I get a peer review on my answer? (If this is not the appropriate forum to make this request, which is?)
Update: I think my answer may be incorrect because it assumes an SSD that can hold both OSes. Having reviewed the relative sizes, I am no longer sure this is the case. I'm leaving the answer for peer review while I continue researching. Any input would be appreciated.