Gmap + Location. What is the association between user and nodes when user have multiple locations?

Hi folks,

I was working a project which is based on Gmap and Location module. And it is working in progress. After i did pretty much research recently. I knows those module more and more. Originally concept of this business is a shop. User can be buyer and seller and seller can post products to sell. My understanding about these modules is one location per user and all products(node) belongs to this user. But now i found the location module supported multiple locations for each user(It might be a feature in the future or pretty soon).

So my question is What is the association between user and nodes when user have multiple locations? And how to set it up?

Note: For now i didn't add locations to product and i know it can be added from CCK. What i want to implement is for each product can be attached with the seller(owner)'s specific location. If this possible to do?

Any reply will be appreciated!
Thanks!