Question in title. If I wanted to splash a level in wizard for some reason, would I be able to take an arcane bond and have other people enchant it, paying normal costs?
As far as I can tell, there is no reason you could not, and you could even switch to another you find in a dungeon if you like it better.
Yup, I don't see why not. I know this isn't Paizo material, but...
Way of the Wicked Spoiler:
A semi-major NPC is a wizard who has a bonded wand of fireball.
That seems to imply that bonded items can be changed and can be other magical items in their own right, but as I said its not strictly Paizo material (although Fire Mountain Games are very good with their rules).
Question in title. If I wanted to splash a level in wizard for some reason, would I be able to take an arcane bond and have other people enchant it, paying normal costs?
Yes. Nothing in the description prevents the item from being enchanted like any other item.