You may just want to use a texture map on the figure's skin for the gloves, if they won't be shown in close-up.
 
Work slowly with Wardrobe Wizard; I'd recommend only converting one or two items at a time, then rebooting. I suspect there's a memory leak somewhere in the code- either for WW or Poser itself. After trying an all-nighter batch conversion of some clothes, I discovered WW had crashed out with a memory error, and P8 wouldn't render. Poser/Python had used more than 2.4 GB of memory without freeing any of it up.