Thank you Palscal.

My solution for what triggered the question:

I was not aware that on the template user, "template user" as default acts as a, eh... well a template. So, setting wanted salesman/ team on that user did the trick for me.

Now, I will go back and make reckless love to my sweet odoo instance.

In version 8, it should be the salesperson set on the partner creating the order. If there is no sales person, then it fallback on the administrator. If you wish to set another one, you should look into setting a default salesperson to the partners created.

In master version (future v9), it has changed and will now be the salesman specified on the website configuration.

https://www.odoo.com/fr_FR/forum/help-1/question/how-to-set-the-default-sales-person-for-e-commerce-orders-instead-of-administrator-87414