So weapons and armor work differently for your shifting.
When I wrote up shifting, I figured that any clever player would just strip down their wearable gear, shift, and put it back on anyway. While I don't have a problem with a bear wearing some boots and a cape, I don't feel the players should have to do that, so I made it so all wearable gear would still function when you shifted. It just saves everybody a step. Now, things like weapons and other things you wield (like wands, staves, and whatnot) cannot be used in another form. There are a few exceptions. You could turn into a gorilla and be able to weild a weapon, but you can't speak to activate anything like wands.
So, as far as normal magical weapons and armor go, you can craft an armor and wear it in either form. You'll get the magical benefit either way, but only get the armor bonus in your human form. Any weapon you make can only be used in a half-elf form or as a gorilla. As far as a specific enchantment that lets it work when shifted, I'll have to look into that and see what's available. The Magic Item Compendium might have something...
Make sense?
