The problem items retain their incorrect properties in my game, so it is not just a display issue with Vista. I tried copying a set of inventory files from one of my saves at the arena to both of your saves, and there were no problems (other than the normal item corruption that can happen transferring inventory files between saves, where the description can change, but the item still goes in the same slot) with the equipment I had. Copying your inventory files into my save, the problem items were still a problem.
How often are you finding these corrupt items?
Does it seem to matter if you are in the main game or battle fields? How about found or dropped items vs purchased?
Have you had items work fine for awhile and then become corrupt, or do they go into the wrong slot as soon as you get the item?
I tried buying a few more things in your saves and didn't have any problems, but that may be due to luck with the small selection of equipment I could afford. Later tonight or tomorrow I'll get rid of the problem items and see if I can acquire enough new equipment to determine if I run into the same issue, or not.
If the problem is how the game generates new items in Vista, then I shouldn't encounter any new items being equipped to the wrong slot; if the corruption can happen when equipping or moving and item around, then I may (but probably won't) encounter it; if there is something wrong in the inventory file structure, rather than just specific data entries for certain items, then I should probably see this as well.