I'm attempting a shoe conversion today too. I think it's totally do-able to complete a shoe conversion with XD, but you will have to make the final steps yourself (morph shoe to fit foot and adding bones in the Setup Room). 

I gave Cd (or is XD?) a doosy of boot to convert too!  teehee  Laura Harjuku Cheerleader! Weeee! Oh my beautiful bishies want those shoes so bad....  hehehehehehe  The conversion itself at high resolution took a long time, over an hour. The drain on my XP CPU topped off at around 187,000k too. oO  I haven't checked the results yet.

I looked again at the XD prices last night. It seems cheap!  It's $9 per destination figure. So let's see, I want to convert everything to M3. How much will that cost me? Get this, -- $9! Unlimited. Forever. That means with just one high resolution clothing conversion to just one figure, and CrossDresser has paid for itself for that figure!   WOOT!  oO

bB